Relax Java pipeline path length checks

[Weidong Xu (weidongxu-microsoft)]

Summary

• Reduce the Java CI path-length base reservation from 38 to 18 characters.
• Apply the change to both standard CI and patch-release pipelines.

This allows repository-relative file and directory paths to be 20 characters longer while retaining the Windows 260-character file-path and 248-character directory-path checks.

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Reason here Azure/azure-rest-api-specs#44457 (comment)

[azure-pipelines]

Azure Pipelines:
Successfully started running 1 pipeline(s).
34 pipeline(s) were filtered out due to trigger conditions.
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[azure-pipelines]

Azure Pipelines:
Successfully started running 1 pipeline(s).
34 pipeline(s) were filtered out due to trigger conditions.
There may be pipelines that require an authorized user to comment /azp run to run.

[Copilot]

Pull request overview

This PR relaxes the Windows path-length guard used by Java CI by lowering the reserved “base checkout path length” from 38 to 18, and applies the same adjustment to the patch-release pipeline variant, allowing longer repository-relative paths to pass the check.

Changes:

• Reduced BasePathLength from 38 → 18 in the main CI Analyze job’s verify-path-length step.
• Reduced BasePathLength from 38 → 18 in the patch pipeline’s verify-path-length step.
• Updated the inline comments describing the rationale (though the “why 18” assumption could be clearer).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
eng/pipelines/templates/stages/archetype-sdk-client-patch.yml	Lowers the path-length reservation used by verify-path-length in the patch pipeline.
eng/pipelines/templates/jobs/ci.yml	Lowers the path-length reservation used by verify-path-length in standard CI (Analyze job).