Fix create_grammar_backend test calls with think_end_id

[ShangmingCai]

Motivation

Fix missing CI change of #22148

Modifications

Accuracy Tests

Speed Tests and Profiling

Checklist

• Format your code according to the Format code with pre-commit.
• Add unit tests according to the Run and add unit tests.
• Update documentation according to Write documentations.
• Provide accuracy and speed benchmark results according to Test the accuracy and Benchmark the speed.
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3. Trigger CI tests with comments or contact authorized users to do so.
   • Common commands include /tag-and-rerun-ci, /tag-run-ci-label, /rerun-failed-ci
4. After green CI and required approvals, ask Merge Oncalls or people with Write permission to merge the PR.

[ShangmingCai]

/rerun-stage stage-a-test-cpu

[github-actions]

✅ Triggered stage-a-test-cpu to run independently (skipping dependencies). View workflow run

[gemini-code-assist]

Code Review

This pull request updates the unit tests in test_base_grammar_backend.py to explicitly pass the think_end_id argument when calling create_grammar_backend, ensuring the tests correctly handle scenarios with and without a reasoning parser. I have no feedback to provide.

[ShangmingCai]

Fixed.

[ShangmingCai]

/rerun-stage stage-a-test-cpu

[github-actions]

✅ Triggered stage-a-test-cpu to run independently (skipping dependencies). View workflow run

[ShangmingCai]

Check again. Passed.