f187c3abf8
Currently we don't defer any symbols that have references outside of the `import` statement and the `imports` array. This is a bit too aggressive, because it's possible that the symbol is only used for types (e.g. `viewChild<SomeCmp>('ref')`) which will be stripped when emitting to JS.
These changes expand the logic so that references inside type nodes aren't considered.
**Note:** one special case is when the symbol used in constructor-based DI (e.g. `constructor(someCmp: SomeCmp)`, because these constructors will be compiled to `directiveInject` calls. We don't need to worry about them, because the compiler introduces an addition `import * as i1 from './some-cmp';` import that it uses to refer to the symbol.
Fixes #55991.
PR Close #58104
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