fix(linter): Don't check for multiple bits at once.

[AndyA]

Fixes: #1687

The check

    if regexp_lit.regex.flags.contains(RegExpFlags::I | RegExpFlags::M) {
        return None;
    }

checks for both I and M being set. To catch them individually we need:

    if regexp_lit.regex.flags.contains(RegExpFlags::I) || regexp_lit.regex.flags.contains(RegExpFlags::M) {
        return None;
    }

[camc314]

Thanks!

[Dunqing]

Why does this PR contain an unrelated commit?

[camc314]

Why does this PR contain an unrelated commit?

Might Need rebasing?

[codspeed-hq]

CodSpeed Performance Report

Merging #1688 will improve performances by 5.22%

_{Comparing AndyA:1687-prefer-string-starts-ends-with-ignores-case (5ef2c43) with main (9f990ce)}

Summary

⚡ 1 improvements
✅ 19 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	AndyA:1687-prefer-string-starts-ends-with-ignores-case	Change
⚡	semantic[vue.js]	80.4 ms	76.4 ms	+5.22%