refactor(ivy): Use AttributeMarker instead of NS (#23899)

- Removes NS enum
- Uses existing AttributeMarker
- Adds enum value NAMESPACE_URI

PR Close #23899

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

@@ -12,18 +12,6 @@ import {LQueries} from './query';
 import {RElement, RNode, RText} from './renderer';
 import {LView, TData, TView} from './view';
 
-
-/**
- * Namespace attribute flags.
- */
-export const enum NS {
-  /**
-   * Use the next value as the full namespaces URI, the values after that
-   * are then the name and the value, respectively.
-   */
-  FULL = 0,
-}
-
 /**
  * TNodeType corresponds to the TNode.type property. It contains information
  * on how to map a particular set of bits in LNode.flags to the node type.
@@ -172,7 +160,11 @@ export interface LProjectionNode extends LNode {
  * items are not regular attributes and the processing should be adapted accordingly.
  */
 export const enum AttributeMarker {
-  NS = 0,  // namespace. Has to be repeated.
+  /**
+   * Use the next value as the full namespaces URI, the values after that
+   * are then the name and the value, respectively.
+   */
+  NAMESPACE_URI = 0,  // namespace. Has to be repeated.
 
   /**
    * This marker indicates that the following attribute names were extracted from bindings (ex.:
@@ -188,7 +180,7 @@ export const enum AttributeMarker {
  * - attribute names and values
  * - special markers acting as flags to alter attributes processing.
  */
-export type TAttributes = (string | AttributeMarker | NS)[];
+export type TAttributes = (string | AttributeMarker)[];
 
 /**
  * LNode binding data (flyweight) for a particular node that is shared between all templates