test: add missing unit tests, fix polytype meta data lookup

[mfal]

Summary

• Tests: add unit tests for the modules that had none (queries, resolveGhostChain, invalidate, reset, withEachGhost, hash, context, types, polytype), and extend metaData, asGhost and makeGhost tests (render(), reset(), generated query keys, query options, transform dependencies, error boundary). 25 → 115 tests.
• The former queries.test.ts actually tested metaData.ts, so it's renamed to metaData.test.ts, and queries.test.ts now tests query key generation.
• Fix: with the ./polytype entry point, getMetaData() returned undefined for every model with incomplete meta data (only name or only getId). The reason is that getPrototypeListOf(Object.prototype) returns [] instead of [null]. Meta data of multiple parent classes was also never merged, because the lookup stopped after the first parent branch.

Meta data precedence (new)

The lookup walks all parent classes depth-first and merges what it finds:

1. The class itself wins over its parents.
2. Earlier parents, including their ancestors, win over later ones.

class Both extends classes(Named, IdOnly) {}
getModelName(new Both()); // "Named"      (before: undefined)
getModelId(new Both());   // from IdOnly  (before: undefined)

Single inheritance without polytype behaves as before.

Not addressed

forwardQueryContext() throws away the result of ghostFnContext.bind(...) and calls fn() directly. It only works when called synchronously inside an active query context. The tests cover only that case.

Test plan

• pnpm test in packages/react-ghostmaker (tsc, lint, build, vitest, licenses) passes locally
• New polytype tests failed before the fix and pass after it

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