fix(compartment-mapper): policy, parser type fixes

[boneskull]

• Fixes CompartmentDescriptor so that it is generic on the PackagePolicy; externally-defined ParseFns can now refer to the specific contents of a custom PackagePolicy present in a CompartmentDescriptor.
• Introduces ParseSourceMapHook; differentiated from @endo/module-source's SourceMapHook.
• Fixes type of PolicyItem; eliminates confusion between void (no extra union members) and any (SomePackagePolicy).

[boneskull]

Warning

This PR is part of a stack and targets branch boneskull/evasive-pipeline2, not master.
DO NOT MERGE until feat(evasive-transform): expose makeTransformCommentsVisitor #3217 is merged into master.

📚 Pull Request Stack

• branch: master
  • fix(compartment-mapper,bundle-source): async parser support #3186 - branch: boneskull/async-parser
    • feat(evasive-transform): expose makeTransformCommentsVisitor #3217 - branch: boneskull/evasive-pipeline2
      • fix(compartment-mapper): policy, parser type fixes #3247 - branch: boneskull/fix-module-source-types2 (this PR)
        • feat(module-source): fix types, expose analyzer.js subpath #3218 - branch: boneskull/module-source-pipeline2
          • feat(module-source): expose AST-based CJS parser #3220 - branch: boneskull/cjs-ast-parser2
            • feat(compartment-mapper): expose findUnknownCanonicalNames #3221 - branch: boneskull/export-find-canonical-names2
              • feat(parser-pipeline): create @endo/parser-pipeline #3158 - branch: boneskull/ast-service

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[changeset-bot]

🦋 Changeset detected

Latest commit: 1c80621

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 7 packages

Name	Type
@endo/compartment-mapper	Patch
@endo/bundle-source	Patch
@endo/check-bundle	Patch
@endo/daemon	Patch
@endo/import-bundle	Patch
@endo/test262-runner	Patch
@endo/cli	Patch

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