fix(aws): Inject scopes in TimeoutThread exception with AWS lambda

[alexander-alderman-webb]

Description

Missing tags and breadcrumbs on sentry_sdk>=2.26.1 when lambda functions time out are an unintended consequences of 2d392af

You can verify the change with the new unit test.

To test manually:

1. Clone this repo: https://github.com/getsentry/python-lambda-timeout-repro/tree/main.
2. If you do not already have the sam cli installed, follow the instructions to install the cli: https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/install-sam-cli.html
3. Stick a DSN in sam-app/hello_world/app.py.
4. Use your local clone of the SDK in the lambda. In my case, I updated sam-app/hello_world/requirements.txt with

- sentry_sdk==2.26.1
+ /Users/alex/code/sentry-repos/sentry-python

Follow the commands to run the lambda in the README.md of the project. That is, in separate terminals run

sam local start-lambda --debug --template .aws-sam/build/template.yaml
sam local invoke HelloWorldFunction

Issues

More information about how I found the bug are described in #4912.

Closes #4894

Reminders

• Please add tests to validate your changes, and lint your code using tox -e linters.
• Add GH Issue ID & Linear ID (if applicable)
• PR title should use conventional commit style (feat:, fix:, ref:, meta:)
• For external contributors: CONTRIBUTING.md, Sentry SDK development docs, Discord community

[sentrivana]

LGTM, nice!

[sentrivana]

We also use TimeoutThread in the GCP integration, might be this is also broken there 👀