refactor(ivy): remove type from DirectiveDef (#21374)

This change makes the code cleaner for the user. It does mean
a little bit more work for us since we have to patch the `type` back
into the `DirectiveDef`. However since the patching happens only once
on startup it should not be significant.

PR Close #21374

modules/benchmarks/src/tree/render3/tree.ts

@@ -36,7 +36,6 @@ export class TreeComponent {
 
   /** @nocollapse */
   static ngComponentDef: ComponentDef<TreeComponent> = defineComponent({
-    type: TreeComponent,
     tag: 'tree',
     template: function(ctx: TreeComponent, cm: boolean) {
       if (cm) {
@@ -93,7 +92,6 @@ export class TreeFunction extends TreeComponent {
 
   /** @nocollapse */
   static ngComponentDef: ComponentDef<TreeFunction> = defineComponent({
-    type: TreeFunction,
     tag: 'tree',
     template: function(ctx: TreeFunction, cm: boolean) {
       // bit of a hack