Move ViewChild focusable to base class as the annotation can now be in the super class.

PiperOrigin-RevId: 250326498

Author: TedSander

angular_components/lib/material_input/base_material_input.dart

@@ -489,6 +489,12 @@ class BaseMaterialInput extends FocusableMixin
     inputRef.nativeElement.select();
   }
 
+  @ViewChild(FocusableDirective)
+  @override
+  set focusable(Focusable value) {
+    super.focusable = value;
+  }
+
   /// The message to display when character counter is shown.
   ///
   /// The character count in the form "[currentCount] / [maxCount]", such as

angular_components/lib/material_input/material_input.dart

@@ -86,15 +86,6 @@ class MaterialInputComponent extends BaseMaterialInput
 
   ChangeDetectorRef _changeDetector;
 
-  /// TODO(google): The following value could be set in the base class, but
-  /// there is currently no working way to set ViewChild values on the base
-  /// class.
-  @ViewChild(FocusableDirective)
-  @override
-  set focusable(Focusable value) {
-    super.focusable = value;
-  }
-
   @ViewChild('inputEl')
   ElementRef inputEl;
 

angular_components/lib/material_input/material_input_multiline.dart

@@ -89,15 +89,6 @@ class MaterialMultilineInputComponent extends BaseMaterialInput
       : _changeDetector = changeDetector,
         super(cd, changeDetector, validator);
 
-  /// TODO(google): The following values could be set in the base class, but
-  /// there is currently no working way to set ViewChild values on the base
-  /// class.
-  @ViewChild(FocusableDirective)
-  @override
-  set focusable(Focusable value) {
-    super.focusable = value;
-  }
-
   // Overriden to add a HostListener event.
   @HostListener('focus')
   @override