fix: Remove duplicate form buttons in workflow process creation

[Copilot]

Description

The workflow "发起流程" (Start Process) page was rendering duplicate form buttons at the bottom when switching to the form filling interface. The form-create library's built-in submit/reset buttons appeared in addition to the custom action buttons, causing UI clutter.

Root cause: Form configuration allowed default button rendering, then attempted post-render hiding via fApi.value?.btn.show(false) - unreliable due to timing.

Fix: Configure submitBtn: false and resetBtn: false in form options before render:

  setConfAndFields2(detailForm, row.formConf, row.formFields, formVariables);

+ // 隐藏 form-create 的提交按钮和重置按钮
+ detailForm.value.option.submitBtn = false;
+ detailForm.value.option.resetBtn = false;
+
  // 设置表单就绪状态
  isFormReady.value = true;

- await nextTick();
- fApi.value?.btn.show(false); // 隐藏提交按钮

Only the Card actions template buttons now render. Matches pattern in form-design.vue.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Please, don't make changes to pnpm-lock.yaml unless you introduce a new test example.

Checklist

• If you introduce new functionality, document it. You can run documentation with pnpm run docs:dev command.
• Run the tests with pnpm test.
• Changes in changelog are generated from PR name. Please, make sure that it explains your changes in an understandable manner. Please, prefix changeset messages with feat:, fix:, perf:, docs:, or chore:.
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Bug: 工作流程-审批中心-发起流程，界面bug</issue_title>
<issue_description>### Version

Vben Admin V5

Describe the bug?

Reproduction

进入工作流程-审批中心-发起流程，切换到表单填写界面后，底部会出现一个额外的表单，导致页面错乱。

System Info

System:
    OS: Windows 11 10.0.26100
    CPU: (16) x64 11th Gen Intel(R) Core(TM) i7-11800H @ 2.30GHz
    Memory: 5.09 GB / 31.20 GB
  Binaries:
    Node: 22.19.0 - C:\Program Files\nodejs\node.EXE
    npm: 11.6.0 - C:\Users\wangxy\AppData\Roaming\npm\npm.CMD
    pnpm: 10.14.0 - C:\Users\wangxy\AppData\Roaming\npm\pnpm.CMD
  Browsers:
    Chrome: 141.0.7390.123
    Edge: Chromium (140.0.3485.54)
    Internet Explorer: 11.0.26100.1882

Relevant log output

Validations

• Read the docs
• Ensure the code is up to date. (Some issues have been fixed in the latest version)
• I have searched the existing issues and checked that my issue does not duplicate any existing issues.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Bug: 工作流程-审批中心-发起流程，界面bug #154

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