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Component commits:
62aad54b98 Fix a crash when transforming functions in modules.
When transforming a module declaration and block, parse tree nodes
contained in the module block have their parent pointers reset due to
`shouldEmitModuleDeclaration` calling into `isInstantiatedModule`, which
needs to set parent pointers to operate.
That causes a crash when later transforming any nodes within the module,
as retrieving their source file in `getSourceFileOfNode` (via
`getOrCreateEmitNode`) fails, due to their new synthesized parent nodes
not being in a source file.
This change avoids the issue by using the parse tree node in `ts.ts` to
decide whether a module declaration should be emitted (i.e. whether the
module contains values).
This means transformers cannot add values to modules that previously did
not contain any.
Fixes #34644.