[CI] Skip PIR version validation on non release branch and forked repo

[SigureMo]

PR Category

Environment Adaptation

PR Types

Bug fixes

Description

现在 validate-pir-versions 会产生大量误报

• 「问题一」所有在 upstream PaddlePaddle/Paddle 创建的分支都会创建一个 issue https://github.com/PaddlePaddle/Paddle/issues?q=sort%3Aupdated-desc%20is%3Aissue%20DEVELOP_VERSION ，不过所幸在主 repo 创建分支的不多
• 「问题二」所有在 forked repo 里创建的分支都会创建一个 issue https://github.com/cattidea/Paddle/issues?q=sort%3Aupdated-desc%20is%3Aissue%20DEVELOP_VERSION ，这个就多了，基本上每个 PR 都会触发一个

因此本 PR 分两个 commit 对该问题修复和测试：

• 5f20de8 用于修复「问题一」，因为 branches 在 create 事件下不是有效字段，只能通过 if
  • 测试项 1：在 forked repo 创建 xxx 分支不会创建 issue https://github.com/cattidea/Paddle/actions/runs/18915063102
  • 测试项 2：在 forked repo 创建 release/xxx 分支会创建 issue https://github.com/cattidea/Paddle/actions/runs/18915075511 DEVELOP_VERSION and RELEASE_VERSION mismatch in paddle/fluid/pir/serialize_deserialize/CMakeLists.txt (release/xxx) cattidea/Paddle#981
• a369100 用于修复「问题二」
  • 测试项：在 forked repo 创建 release/yyy 分支不会创建 issue https://github.com/cattidea/Paddle/actions/runs/18915140510

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[Copilot]

Pull Request Overview

This PR refactors the GitHub Actions workflow trigger mechanism for version validation on release branches. The workflow now triggers on any branch creation event and uses runtime conditions to filter for release branches, replacing the previous approach of using branch filters in the trigger configuration.

• Removed branch-specific filtering from the create trigger
• Consolidated branch filtering logic into a single if condition with additional repository owner validation

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[XieYunshen]

LGTM