feat(bidi): support request state stop event loop

[mkmeral]

Description

Related Issues

Documentation PR

Type of Change

Bug fix New feature Breaking change Documentation update Other (please describe):

Testing

How have you tested the change? Verify that the changes do not break functionality or introduce warnings in consuming repositories: agents-docs, agents-tools, agents-cli

• [ ] I ran hatch run prepare

Checklist

• [ ] I have read the CONTRIBUTING document
• [ ] I have added any necessary tests that prove my fix is effective or my feature works
• [ ] I have updated the documentation accordingly
• [ ] I have added an appropriate example to the documentation to outline the feature, or no new docs are needed
• [ ] My changes generate no new warnings
• [ ] Any dependent changes have been merged and published

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