Fix packagist release failure: configure trunk branch for PushNextDevReleaseWorker (#210)

The release process fails at step 8/8 because `PushNextDevReleaseWorker`
from `symplify/monorepo-builder` needs to be configured to use "trunk"
as the branch name, but was using the default "master" branch.

## Changes

- **`monorepo-builder.php`**: Configure the branch name parameter
explicitly using `$config->parameters()->set(
Option::DEFAULT_BRANCH_NAME, 'trunk' );` to parameterize the default
`PushNextDevReleaseWorker`

The default `PushNextDevReleaseWorker` from symplify/monorepo-builder
now reads the configured branch name parameter (set to "trunk") instead
of using the hardcoded default "master":

```php
// monorepo-builder.php
use Symplify\MonorepoBuilder\ValueObject\Option;

return static function ( MBConfig $config ): void {
    // ...
    $config->defaultBranch( 'trunk' );
    
    // Set the branch name parameter explicitly for PushNextDevReleaseWorker.
    $config->parameters()->set( Option::DEFAULT_BRANCH_NAME, 'trunk' );
    
    $config->workers([
        // ...
        PushNextDevReleaseWorker::class,
    ]);
};
```

> [!WARNING]
>





<details>

<summary>Original prompt</summary>

> 
> ----
> 
> *This section details on the original issue you should resolve*
> 
>
<__filter_complete__></__filter_complete__></details><issue_title>Packagist
release fails</issue_title>
><issue_description>Changed current directory to /home/runner/.composer
> 
> ```
> 
> 1/8) Add local tag "v0.3.0"
> ===========================
> 
> 2/8) Push "0.3.0" tag to remote repository
> ==========================================
> 
> 3/8) Update "replace" version in "composer.json" to new tag to avoid
circular dependencies conflicts
>
====================================================================================================
> 
> 4/8) Set packages mutual dependencies to "^0.3" version
> =======================================================
> 
> 5/8) Change "Unreleased" in `CHANGELOG.md` to "0.3.0 - 2025-11-19"
> ==================================================================
> 
> 6/8) Set packages mutual dependencies to "^0.4" (alias of dev version)
> ======================================================================
> 
> 7/8) Set branch alias "0.4-dev" to all packages
> ===============================================
> 
> 8/8) Push "0.4-dev" open to remote repository
> =============================================
> 
> 
> In ProcessRunner.php line 73:
>
> The command "git add . &amp;&amp; git commit --allow-empty -m "open
0.4-dev" &amp;&amp; git
> push origin "master"" failed.
>
> Exit Code: 1(General error)
>
> Working directory: /home/runner/work/php-toolkit/php-toolkit
>
> Output:
> ================
> [trunk 13f2bc7c] open 0.4-dev
> 10 files changed, 59 insertions(+), 59 deletions(-)
>
>
> Error Output:
> ================
> error: src refspec master does not match any
> error: failed to push some refs to
'https://github.com/WordPress/php-toolki
>   t'                       
> ```</issue_description>
> 
> ## Comments on the Issue (you are @copilot in this section)
> 
><comments>
></comments>
>

- Fixes #209

<!-- START COPILOT CODING AGENT SUFFIX -->



<details>

<summary>Original prompt</summary>

> 
> ----
> 
> *This section details on the original issue you should resolve*
> 
> <issue_title>Packagist release fails</issue_title>
> <issue_description>Changed current directory to /home/runner/.composer
> 
> ```
> 
> 1/8) Add local tag "v0.3.0"
> ===========================
> 
> 2/8) Push "0.3.0" tag to remote repository
> ==========================================
> 
> 3/8) Update "replace" version in "composer.json" to new tag to avoid
circular dependencies conflicts
>
====================================================================================================
> 
> 4/8) Set packages mutual dependencies to "^0.3" version
> =======================================================
> 
> 5/8) Change "Unreleased" in `CHANGELOG.md` to "0.3.0 - 2025-11-19"
> ==================================================================
> 
> 6/8) Set packages mutual dependencies to "^0.4" (alias of dev version)
> ======================================================================
> 
> 7/8) Set branch alias "0.4-dev" to all packages
> ===============================================
> 
> 8/8) Push "0.4-dev" open to remote repository
> =============================================
> 
> 
> In ProcessRunner.php line 73:
>
> The command "git add . && git commit --allow-empty -m "open 0.4-dev"
&& git
> push origin "master"" failed.
>
> Exit Code: 1(General error)
>
> Working directory: /home/runner/work/php-toolkit/php-toolkit
>
> Output:
> ================
> [trunk 13f2bc7c] open 0.4-dev
> 10 files changed, 59 insertions(+), 59 deletions(-)
>
>
> Error Output:
> ================
> error: src refspec master does not match any
> error: failed to push some refs to
'https://github.com/WordPress/php-toolki
>   t'                       
> ```</issue_description>
> 
> ## Comments on the Issue (you are @copilot in this section)
> 
> <comments>
> </comments>
> 


</details>

- Fixes #209

<!-- START COPILOT CODING AGENT TIPS -->
---

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---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: adamziel <[email protected]>
Co-authored-by: Adam Zieliński <[email protected]>

Author: Copilot

monorepo-builder.php

@@ -11,6 +11,7 @@
 use Symplify\MonorepoBuilder\Release\ReleaseWorker\TagVersionReleaseWorker;
 use Symplify\MonorepoBuilder\Release\ReleaseWorker\UpdateBranchAliasReleaseWorker;
 use Symplify\MonorepoBuilder\Release\ReleaseWorker\UpdateReplaceReleaseWorker;
+use Symplify\MonorepoBuilder\ValueObject\Option;
 
 return static function ( MBConfig $config ): void {
 	// Where packages live.
@@ -19,7 +20,13 @@
 			__DIR__ . '/components',
 		)
 	);
+
+	// Set the default branch name for release workers.
 	$config->defaultBranch( 'trunk' );
+
+	// Set the branch name parameter explicitly for PushNextDevReleaseWorker.
+	$config->parameters()->set( Option::DEFAULT_BRANCH_NAME, 'trunk' );
+
 	// Release workers - in order to execute.
 	$config->workers(
 		array(