[TS] Preserve independent bodies of classes with unsupported definitions

[CaelmBleidd]

Class definitions with computed names or unresolved runtime bases currently remove the entire class DTO, including independent method bodies. This became reachable through unsupportedClassDeclarationReason in #443 and rejected 23 previously admitted TS200 targets.

Retain ordinary named bodies and fields for analysis on an existing symbolic receiver. Keep the module declaration, runtime class value/exports, constructor and instance/static lifecycle explicitly unsupported. Computed members never become %computed storage. Initializer closures retain body metadata while their executable initialization and captured-environment construction remain blocked.

Dependent member/prototype operations produce explicit unsupported values. Receiver checks cover union/intersection types, apparent types, generic constraints, nullable receivers and transparent casts. Own data fields remain accessible when unevaluated computed string keys cannot redefine them.

Validation:

• 53 focused frontend regressions passed (classes.spec.ts and partial-class-bodies.spec.ts), including a concrete TypeScript comparison for an independently entered pure body.
• Two production generateEtsIR → JSON → JacoDB model integration regressions passed.
• Frontend checks on all 23 unchanged original acquisition sources restored 23 class declarations with explicit unsupported lifecycle barriers. Twenty targets have ordinary method bodies: 15 have at least one body without a frontend raw fallback, while five retain prefix/barrier bodies only. Neither category establishes successful symbolic execution. GridCollection, ReturnRunCommandNode and WithClass are closure-only: retained metadata does not establish standalone symbolic startup or a valid captured environment. The initial three negative checks remain saved separately.
• Frontend typecheck/build and git diff --check passed. No full test suite or new TS200 campaign was run; no concrete coverage or constructor lifecycle support is claimed.

This PR targets neo independently and changes no USVM code. It does not duplicate the runtime closure-owner fix in #444.

[github-actions]

Test Results

  249 files  +1    249 suites  +1   16m 27s ⏱️ -15s
  902 tests +2    890 ✅ +2  12 💤 ±0  0 ❌ ±0 
2 172 runs  +2  2 122 ✅ +2  50 💤 ±0  0 ❌ ±0 

Results for commit 844a6cd. ± Comparison against base commit 7db549e.