fix(google_genai): Add minimum version check in setup_once

The GoogleGenAI integration is auto-enabled but was not checking the
minimum version (1.29.0) before attempting to patch methods. This could
cause AttributeError crashes during Sentry initialization if a user has
an older version of google-genai installed.

Add _check_minimum_version call in setup_once() to ensure graceful
handling of incompatible versions, matching the pattern used by other
auto-enabled integrations like Anthropic.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: shellmayr

sentry_sdk/integrations/google_genai/__init__.py

@@ -45,6 +45,12 @@ def __init__(self: "GoogleGenAIIntegration", include_prompts: bool = True) -> No
 
     @staticmethod
     def setup_once() -> None:
+        from sentry_sdk.integrations import _check_minimum_version
+        from sentry_sdk.utils import package_version
+
+        version = package_version("google-genai")
+        _check_minimum_version(GoogleGenAIIntegration, version, package="google-genai")
+
         # Patch sync methods
         Models.generate_content = _wrap_generate_content(Models.generate_content)
         Models.generate_content_stream = _wrap_generate_content_stream(