[DX-3791] scan docker logs for panics

[Tofel]

Changes:

• scan docker logs for panics
• add docker log stream fanout, so that we don't need to read log stream multiple times in each log-consuming function

[github-actions]

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[Copilot]

Pull request overview

This PR extends the framework Docker log utilities to support reusing a single container log stream across multiple consumers (fanout), and adds helpers/tests for saving and printing container logs (including red-colored output).

Changes:

• Introduces Docker log stream fanout (StreamContainerLogsFanout / fanoutContainerLogs) so multiple consumers can process the same underlying container log stream.
• Refactors log saving into SaveContainerLogsFromStreams and adds PrintFailedContainerLogs(FromStreams) for printing exited/dead container log tails.
• Adds RedText ANSI helper and unit tests covering fanout + the new stream-based save/print helpers.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 6 comments.

File	Description
framework/docker.go	Adds fanout streaming, refactors log saving to accept pre-fetched streams, and introduces printing of failed container logs.
framework/docker_fanout_test.go	Adds tests for fanout replication and the new stream-based save/print helpers.
framework/text.go	Adds RedText helper for ANSI red terminal output used when printing failed logs.

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