Deck's build log lens should fail gracefully on large build-log.txt files.

[BenTheElder]

(re-filed from https://github.com/kubernetes/test-infra/issues/27497)

What happened: A large (e.g. >26MB) build-log.txt cannot be rendered by Spyglass' build log lens due to the file size. The lens shows the spinning loading symbol forever.

What you expected to happen: I don't expect the lens to be able to highlight and render such a large file, but it should fail more gracefully. We should display an error if the file is large enough to have no chance of rendering in time and if a timeout is reached that should be displayed on the front end rather than spinning the loading symbol forever.

How to reproduce it (as minimally and precisely as possible): Create a job with lots of standard output.

/help-wanted

/kind bug

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/lifecycle stale

[BenTheElder]

/lifecycle frozen