Fix benchmark debug action

[andrewiggins]

Couple issues found in the "Benchmark Debug" & related changes to "CI" workflow:

• CI ref input should default to empty string so by default it checkouts whatever the default commit of the event that triggered it (e.g. merge commit for pull_request event, pushed commit for push event)
• Add npm run analyze command for benchmarks that include logs to analyze
• There is a bug in GitHub workflow parser that doesn't properly handle number-like inputs being passed as an input to a called workflow. Comment out timeout input for now
• Fix ordering of tarballing and clearing directory.
• Add option to specify benchmark to analyze in analyze script
• Make analyze script resilient to malformed logs

[coveralls]

coverage: 99.43%. remained the same when pulling 0fc963f on fix-benchmark-debug into 30873a3 on main.

[andrewiggins]

Successful benchmark debug workflow runs here:

https://github.com/preactjs/preact/actions/runs/6714073169
https://github.com/preactjs/preact/actions/runs/6714075055