refactor(linter/plugins): remove experimental warning

[overlookmotel]

As we prepare for alpha release of JS plugins, it feels like we can remove the warning logged to stderr.

WARNING: JS plugins are experimental and not subject to semver.
Breaking changes are possible while JS plugins support is under development.

They do still remain experimental, but I don't think we need to shout that quite as loudly now.

[overlookmotel]

• refactor(linter/plugins): remove experimental warning #18771 👈 (View in Graphite)
• main

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[Copilot]

Pull request overview

This PR removes the experimental warning message that was displayed to stderr when JS plugins were loaded in oxlint. The warning informed users that JS plugins are experimental and not subject to semver. As the team prepares for the alpha release, this warning is being removed to reduce noise while the plugins remain technically experimental.

Changes:

• Removed the warning code that printed to stderr on first plugin load
• Updated 66 snapshot test files to reflect the absence of the warning in stderr output

Reviewed changes

Copilot reviewed 64 out of 64 changed files in this pull request and generated no comments.

File	Description
crates/oxc_linter/src/config/config_builder.rs	Removed the conditional check and eprintln statement (9 lines) that displayed the experimental warning, along with the #[expect(clippy::print_stderr)] attribute
apps/oxlint/test/fixtures/*/output.snap.md (66 files)	Updated snapshot tests to remove the expected warning text from stderr sections

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[codspeed-hq]

Merging this PR will not alter performance

✅ 46 untouched benchmarks
⏩ 3 skipped benchmarks¹

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_{Comparing om/01-31-refactor_linter_plugins_remove_experimental_warning (a549b21) with main (005910a)²}

Footnotes

1. 3 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

2. No successful run was found on main (d981978) during the generation of this report, so 005910a was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[connorshea]

@camc314 can probably split this out of the stack and merge it alone?

[camc314]

Merge activity

• Jan 31, 5:16 PM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jan 31, 5:16 PM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jan 31, 5:27 PM UTC: camc314 added this pull request to the Graphite merge queue.
• Jan 31, 5:34 PM UTC: Merged by the Graphite merge queue.