[TrimmableTypeMap] Generator fixes: CRC64, override detection, JCW, manifest

[simonrozsival]

1/4 — Generator fixes for trimmable typemap

Depends on: nothing (targets main)

Changes

• CRC64 fix: Use Jones algorithm (Crc64Helper) matching the runtime, not System.IO.Hashing.Crc64
• Inherited override detection: Walk past DoNotGenerateAcw intermediate MCW base types
• Instrumentation targetPackage: Pass package name for manifest instrumentation elements
• JCW lazy registerNatives: App/Instrumentation types use deferred __md_registerNatives() helper
• Backtick sanitization: Clean generic arity markers in proxy type names
• NestedAssembly for UTF-8 helpers: Fix FieldAccessException from NestedPrivate
• Manifest name promotion: Promote compat JNI names for manifest-rooted components
• Deferred registration propagation: Propagate CannotRegisterInStaticConstructor to managed base types
• Typed logger interface
• Build targets and task updates

Tests

346/346 standalone typemap unit tests pass.

Part of the series: PR 1 → PR 2 → PR 3 → [PR 4](Test plumbing)

[simonrozsival]

Superseded by the following 3-PR chain:

1. #TBD — Typed logger interface (targets main)
2. #TBD — Scanner + JCW fixes (targets PR 1)
3. #TBD — Manifest rooting + deferred registration (targets PR 2)

The original PR carried duplicate build pipeline changes from #11036 and was cleaned up and split.

[simonrozsival]

Superseded by the following 3-PR chain:

1. [TrimmableTypeMap] Add typed logger interface #11095 — Typed logger interface (targets main)
2. [TrimmableTypeMap] Scanner and JCW edge-case fixes #11096 — Scanner + JCW fixes (targets PR 1)
3. [TrimmableTypeMap] Manifest rooting and deferred registration propagation #11097 — Manifest rooting + deferred registration (targets PR 2)