fix(assist/organizeImports): don't duplicate header file comment

[Conaclos]

Summary

Fix #6492

Test Plan

I added a test.

[changeset-bot]

🦋 Changeset detected

Latest commit: 4c68235

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 13 packages

Name	Type
@biomejs/biome	Patch
@biomejs/cli-win32-x64	Patch
@biomejs/cli-win32-arm64	Patch
@biomejs/cli-darwin-x64	Patch
@biomejs/cli-darwin-arm64	Patch
@biomejs/cli-linux-x64	Patch
@biomejs/cli-linux-arm64	Patch
@biomejs/cli-linux-x64-musl	Patch
@biomejs/cli-linux-arm64-musl	Patch
@biomejs/wasm-web	Patch
@biomejs/wasm-bundler	Patch
@biomejs/wasm-nodejs	Patch
@biomejs/backend-jsonrpc	Patch

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[codspeed-hq]

CodSpeed Performance Report

Merging #6511 will not alter performance

_{Comparing conaclos/organizeImports-6492 (4c68235) with main (72623fa)}

Summary

✅ 17 untouched benchmarks
🆕 98 new benchmarks

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
🆕	css_analyzer[bootstrap_18416142857265205439.css]	N/A	487.6 ms	N/A
🆕	css_analyzer[bulma_5641719244145477318.css]	N/A	1.1 s	N/A
🆕	css_analyzer[foundation_11602414662825430680.css]	N/A	177.2 ms	N/A
🆕	css_analyzer[pure_9395922602181450299.css]	N/A	18.9 ms	N/A
🆕	css_analyzer[tachyons_11778168428173736564.css]	N/A	133.2 ms	N/A
🆕	css_formatter[bootstrap_18416142857265205439.css]	N/A	116.2 ms	N/A
🆕	css_formatter[bulma_5641719244145477318.css]	N/A	368.1 ms	N/A
🆕	css_formatter[foundation_11602414662825430680.css]	N/A	76.7 ms	N/A
🆕	css_formatter[full_5814491140539129161.css]	N/A	1.3 s	N/A
🆕	css_formatter[materialize_5526761731747548557.css]	N/A	83.9 ms	N/A
🆕	css_formatter[pure_9395922602181450299.css]	N/A	9.5 ms	N/A
🆕	css_formatter[semantic_4685287698740288120.css]	N/A	369.7 ms	N/A
🆕	css_formatter[tachyons_11778168428173736564.css]	N/A	36.9 ms	N/A
🆕	bootstrap_18416142857265205439.css[cached]	N/A	35.7 ms	N/A
🆕	bootstrap_18416142857265205439.css[uncached]	N/A	38.9 ms	N/A
🆕	bulma_5641719244145477318.css[cached]	N/A	110.4 ms	N/A
🆕	bulma_5641719244145477318.css[uncached]	N/A	119 ms	N/A
🆕	foundation_11602414662825430680.css[cached]	N/A	23.1 ms	N/A
🆕	foundation_11602414662825430680.css[uncached]	N/A	24.7 ms	N/A
🆕	full_5814491140539129161.css[cached]	N/A	405.8 ms	N/A
...	...	...	...	...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.