Fix biome fmt error case

[TylerJang27]

Fixes #771 for cases of malformed config. biome fmt outputs an exit code of 1. For lint, we have to have success_codes: [0, 1], but for format we can just have success_codes: [0] so that we better surface this error to users.

Also adds a relevant test case.

[trunk-io]

⏱️ 13m total CI duration on this PR

Job	Cumulative Duration	Recent Runs
Windows Linter Tests	4m	🟩
Linter Tests ubuntu-latest	3m	🟩
Linter Tests macOS	3m	🟩
CodeQL-Build	2m	🟩
Trunk Check runner [linux]	1m	🟩
Repo Tests / Plugin Tests	40s	🟩
Aggregate Test Results	4s	🟩
Detect changed files	4s	🟩

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