feat(lsp): noExcessiveCognitiveComplexity diagnostic shows levels

[chrisgrieser]

Summary

• When running the biome cli, it reports: Please refactor this function to reduce its complexity score from 17 to the max allowed complexity 15.
• In the editor, biome reports: Excessive complexity detected. (biome: lint/complexity/noExcessiveCognitiveComplexity)

see: #4012

This PR simply inserts the levels in the diagnostic message to fix that.

I haven't touched any rust code before, but the change seems straightforward enough, though.

[codspeed-hq]

CodSpeed Performance Report

Merging #4028 will improve performances by 10.41%

_{Comparing chrisgrieser:noExcessiveCognitiveComplexity (b57824a) with main (f6e6cb6)}

Summary

⚡ 1 improvements
✅ 106 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	chrisgrieser:noExcessiveCognitiveComplexity	Change
⚡	db_17847247775464589309.json[cached]	14.2 ms	12.8 ms	+10.41%

[chrisgrieser]

Fixed formatting and updated all tests for noExcessiveCognitiveComplexity for the change in the message output.