feat(ivy): properly apply style="", [style], [style.foo] and [attr.style] bindings (#24602)

PR Close #24602

packages/core/src/render3/interfaces/definition.ts

@@ -290,3 +290,9 @@ export type PipeTypeList =
 // Note: This hack is necessary so we don't erroneously get a circular dependency
 // failure based on types.
 export const unusedValueExportToPlacateAjd = 1;
+
+// Note this will expand once `class` is introduced to styling
+export const enum InitialStylingFlags {
+  /** Mode for matching initial style values */
+  INITIAL_STYLES = 0b00,
+}

packages/core/src/render3/interfaces/node.ts

@@ -6,6 +6,8 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
+import {StylingContext} from '../styling';
+
 import {LContainer} from './container';
 import {LInjector} from './injector';
 import {LProjection} from './projection';
@@ -341,6 +343,8 @@ export interface TNode {
    * If this node is not part of an i18n block, this field is null.
    */
   detached: boolean|null;
+
+  stylingTemplate: StylingContext|null;
 }
 
 /** Static data for an LElementNode  */