Dylan Hunn
4b4dd2bf3a
Consider an `ng-template` which is generated as a result of a structural directive:
```
<div *ngFor="let inner of items"
(click)="onClick(inner)"
[title]="getTitle()"
>
```
This should logically expand into something like the following:
```
<ng-template [ngForOf]="..." >
<div (click)="..." [title]="..."></div>
</ng-template>
```
Note that the `(click)` handler and the `[title]` property are only present on the inner div, *not* on the enclosing generated `ng-template`.
Previously, Template Pipeline would place these bindings on *both* the tempate and the inner element.
However, we can't just remove them completely, because these bindings should still be matchable on the generated `ng-template` (which is very surprising, but nonetheless true).
We resolve this issue with two improvements:
(1) The ingestion step is now much smarter about determining not only if a binding is on a template element, but whether it actually targets that template element.
(2) We use `ExtractedAttributeOp` directly, rather than going through `BindingOp`, to cause the `ng-template` to still receive these bindings in its `consts` array for matching purposes.
PR Close #51950
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