fix(exports): scope inlined dependencies to configs with exports

[lazerg]

• This PR contains AI-generated code, but I have carefully reviewed it myself. Otherwise, my PR may be closed.

Description

When several build configs share one package.json and only some enable exports, the generated inlinedDependencies field pulled inlined deps from every config for that package, including ones that never contribute to the exports map. So a config that bundles everything (say a standalone binary excluded from files) leaked its inlined packages into the library's published package.json, even though the library externalizes those same packages.

The fix scopes the merge to the bundles the exports map is built from, so inlinedDependencies only lists deps that an exports config actually inlines.

Linked Issues

Fixes #1039

Additional context

Added a regression test with a two-config setup (one library config with exports, one bundle-everything config without) asserting the inlined dep from the second no longer appears in the package's inlinedDependencies.

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commit: b17d386