Process fork no longer hangs; LLM spans no longer drop on parse failure

Bug Fixes

• AAP: Fix an issue which could make the Threat Protection panel wrongly report that a library update was required.

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• tracing: This fix resolves a rare issue that could cause an application to hang after forking a child process.

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• LLM Observability: This fix resolves an issue where the google_adk integration dropped an agent span (logging missing span kind in span context) and orphaned its child spans when a Gemini response part could not be parsed. The span kind is now set before input/output extraction, so a parsing failure degrades to empty input/output instead of dropping the span.

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• LLM Observability: This fix resolves an issue where the Google GenAI and google_adk integrations rendered unhandled Gemini response parts (such as inline_data, file_data, empty parts, or thought-signature parts) as a confusing Unsupported file type placeholder. These parts now produce a concise summary or empty content.

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• CI Visibility: This fix resolves an issue where quarantined tests were not retried by Auto Test Retry (ATR).