chore(ci): Add required checks job for build

[philprime]

📜 Description

Migrates the build.yml workflow to use dorny/paths-filter for conditional execution on pull requests and introduces a build-required-check job for branch protection.

💡 Motivation and Context

This is part of the ongoing effort (see #5951) to replace on.pull_request.paths filtering with files-changed jobs. The aim is to optimize CI runs by only executing build jobs when relevant files change, while ensuring a consistent required check for branch protection rules. This implementation follows the pattern established in #5893 for tests.yml and api-stability.yml.

💚 How did you test it?

The changes were implemented by following the exact pattern from existing workflows (auto-update-tools.yml, tests.yml, api-stability.yml). The [skip ci] keyword was used in the commit message to prevent immediate CI runs during the migration. The expected behavior is that the build workflow will now run conditionally for pull requests based on file changes and provide a reliable required check.

Fixes #5956

📝 Checklist

You have to check all boxes before merging:

• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

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#skip-changelog

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.723%. Comparing base (9cbff30) to head (623f6b2).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #5997       +/-   ##
=============================================
+ Coverage   86.682%   86.723%   +0.040%     
=============================================
  Files          424       424               
  Lines        36712     36712               
  Branches     17356     17358        +2     
=============================================
+ Hits         31823     31838       +15     
+ Misses        4841      4830       -11     
+ Partials        48        44        -4     

see 8 files with indirect coverage changes

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[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1237.08 ms	1259.31 ms	22.22 ms
Size	23.75 KiB	928.15 KiB	904.40 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
748df9d	1231.63 ms	1259.47 ms	27.84 ms
9e6569a	1216.07 ms	1242.50 ms	26.43 ms
45482a6	1225.88 ms	1254.27 ms	28.39 ms
aa0b738	1236.78 ms	1253.08 ms	16.31 ms
a3dfd57	1230.78 ms	1244.91 ms	14.14 ms
1936411	1231.51 ms	1253.27 ms	21.76 ms
ccf1278	1226.84 ms	1248.51 ms	21.67 ms
884b224	1221.11 ms	1255.88 ms	34.77 ms
605fa27	1226.31 ms	1251.35 ms	25.05 ms
a2a3bfb	1227.94 ms	1261.26 ms	33.32 ms

App size

Revision	Plain	With Sentry	Diff
748df9d	23.75 KiB	902.48 KiB	878.74 KiB
9e6569a	23.75 KiB	904.54 KiB	880.79 KiB
45482a6	23.75 KiB	919.91 KiB	896.16 KiB
aa0b738	23.74 KiB	872.75 KiB	849.00 KiB
a3dfd57	23.75 KiB	913.63 KiB	889.87 KiB
1936411	23.74 KiB	913.39 KiB	889.64 KiB
ccf1278	23.75 KiB	877.15 KiB	853.40 KiB
884b224	23.75 KiB	879.55 KiB	855.80 KiB
605fa27	23.75 KiB	908.03 KiB	884.28 KiB
a2a3bfb	23.75 KiB	872.67 KiB	848.92 KiB