test: clean up explicit dynamic query usages (#33015)

Cleans up all the places where we explicitly set `static: false` on queries.

PR Close #33015

aio/content/examples/component-interaction/src/app/countdown-parent.component.ts

@@ -39,7 +39,7 @@ export class CountdownLocalVarParentComponent { }
 })
 export class CountdownViewChildParentComponent implements AfterViewInit {
 
-  @ViewChild(CountdownTimerComponent, {static: false})
+  @ViewChild(CountdownTimerComponent)
   private timerComponent: CountdownTimerComponent;
 
   seconds() { return 0; }