bun pm pack support "files" starting with ./

[RiskyMH]

What does this PR do?

fixes #17134

• Documentation or TypeScript types (it's okay to leave the rest blank in this case)
• Code changes

How did you verify your code works?

made a test + tested with npm for intended outcomes

• note that !./ actually doesn't do anything on npm

[robobun]

^{Updated 1:22 AM PT - Feb 8th, 2025}

❌ @RiskyMH, your commit d911de7 has 1 failures in Build #11307:

• test/js/bun/http/serve-body-leak.test.ts - 5 failing on 🐧 3.20 x64

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🧪   try this PR locally:

bunx bun-pr 17135

[Jarred-Sumner]

Do we need to do path normalization in general or specifically just ./?

[dylan-conway]

Do we need to do path normalization in general or specifically just ./?

I think we need this. ./index.js and ./////index.js should both normalize to index.js. I suggest calling bun.path.normalizeBuf() on the input before passing to Pattern.fromUTF8.

[dylan-conway]

Nice, when tests pass let's merge