fix(ivy): handle namespaces in attributes (#28242)

Adds handling for namespaced attributes when generating the template and in the `elementAttribute` instruction.

PR Close #28242

packages/core/test/render3/render_util.ts

@@ -394,7 +394,7 @@ class MockRenderer implements ProceduralRenderer3 {
   destroy(): void {}
   createComment(value: string): RComment { return document.createComment(value); }
   createElement(name: string, namespace?: string|null): RElement {
-    return document.createElement(name);
+    return namespace ? document.createElementNS(namespace, name) : document.createElement(name);
   }
   createText(value: string): RText { return document.createTextNode(value); }
   appendChild(parent: RElement, newChild: RNode): void { parent.appendChild(newChild); }