fix(core): don't wrap <tr> and <col> elements into a required parent (#29219)

BREAKING CHANGE:

Certain elements (like `<tr>` or `<col>`) require parent elements to be of a certain type by the HTML specification
(ex. <tr> can only be inside <tbody> / <thead>). Before this change Angular template parser was auto-correcting
"invalid" HTML using the following rules:
- `<tr>` would be wrapped in `<tbody>` if not inside `<tbody>`, `<tfoot>` or `<thead>`;
- `<col>` would be wrapped in `<colgroup>` if not inside `<colgroup>`.

This meachanism of automatic wrapping / auto-correcting was problematic for several reasons:
- it is non-obvious and arbitrary (ex. there are more HTML elements that has rules for parent type);
- it is incorrect for cases where `<tr>` / `<col>` are at the root of a component's content, ex.:

```html
<projecting-tr-inside-tbody>
  <tr>...</tr>
</projecting-tr-inside-tbody>
```

In the above example the `<projecting-tr-inside-tbody>` component culd be "surprised" to see additional
`<tbody>` elements inserted by Angular HTML parser.

PR Close #29219

packages/core/test/acceptance/query_spec.ts

@@ -401,6 +401,33 @@ describe('query logic', () => {
 
   });
 
+  describe('descendants', () => {
+
+    it('should match directives on elements that used to be wrapped by a required parent in HTML parser',
+       () => {
+
+         @Directive({selector: '[myDef]'})
+         class MyDef {
+         }
+
+         @Component({selector: 'my-container', template: ``})
+         class MyContainer {
+           @ContentChildren(MyDef) myDefs !: QueryList<MyDef>;
+         }
+         @Component(
+             {selector: 'test-cmpt', template: `<my-container><tr myDef></tr></my-container>`})
+         class TestCmpt {
+         }
+
+         TestBed.configureTestingModule({declarations: [TestCmpt, MyContainer, MyDef]});
+         const fixture = TestBed.createComponent(TestCmpt);
+         const cmptWithQuery = fixture.debugElement.children[0].injector.get(MyContainer);
+
+         fixture.detectChanges();
+         expect(cmptWithQuery.myDefs.length).toBe(1);
+       });
+  });
+
   describe('observable interface', () => {
 
     it('should allow observing changes to query list', () => {