fix(publish): "tarball" and "_attachment" path fix

[dylan-conway]

What does this PR do?

bun publish was setting the tarball path for "tarball" and the "_attachments" key to @scope-pkg-1.0.0.tgz instead of @scope/pkg-1.0.0.tgz. This works for npm and verdaccio, but the github package registry expects the unmodified scoped form.

fixes #15245

Also moved publish tests into bun-publish.test.ts.

How did you verify your code works?

Added a test for scoped packages because we were missing one, but this test would pass with the previous version of bun.

[robobun]

^{Updated 8:52 PM PT - Jan 22nd, 2025}

❌ @dylan-conway, your commit 4b97dcd has 3 failures in #10375:

• test/js/web/websocket/autobahn.test.ts - code 1 on 🐧 24.04 x64-baseline
• test/js/node/test/parallel/test-http-chunk-problem.js - code 1 on 🐧 22.04 x64
• test/js/node/test/parallel/test-http-chunk-problem.js - code 1 on 🐧 3.20 x64-baseline
• test/cli/install/bun-publish.test.ts - 2 failing on 🍎 13 aarch64
• test/cli/install/bun-publish.test.ts - 2 failing on 🍎 14 aarch64
• test/cli/install/bun-publish.test.ts - 2 failing on 🪟 2019 x64
• test/cli/install/bun-publish.test.ts - 2 failing on 🪟 2019 x64-baseline
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 22.04 aarch64
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 20.04 aarch64
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 24.04 aarch64
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 12 aarch64
• test/cli/install/bun-publish.test.ts - 2 failing on 🍎 14 x64
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 3.20 aarch64
• test/cli/install/bun-publish.test.ts - 2 failing on 🍎 13 x64
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 22.04 x64
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 20.04 x64
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 12 x64
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 24.04 x64
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 22.04 x64-baseline
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 24.04 x64-baseline
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 12 x64-baseline
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 20.04 x64-baseline
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 3.20 x64
• test/cli/install/bun-publish.test.ts - 2 failing on 🐧 3.20 x64-baseline

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🧪   try this PR locally:

bunx bun-pr 16630