fix: stop unlinking parents on array-valued bindings

setPropertyInternal cleared `parent` and `parentNode` on every array it
assigned, working around `_addView` throwing "View already has a parent" when a
shared SegmentedBarItem[] was re-bound to a freshly created host inside a
ListView item template (NativeScript/nativescript-angular#900).

The workaround was both too broad and unsound. It ran for every array-valued
binding, so plain data models carrying `parent`/`parentNode` fields were
silently mutated, and it threw a TypeError on null or undefined array entries.
It also assigned `parent` directly instead of going through `_removeView`, so
`_tearDownUI` and `_parentChanged` never ran and `_context` stayed set --
making the new host's `_setupUI` take its `this._context === context` early
return and leaving the re-parented view out of the native visual tree entirely.

The detach belongs in core, where SegmentedBarBase.onItemsChanged and
TabViewBase.onItemsChanged can un-parent through `_removeView` before adopting.
This requires that core-side fix to be present.

Author: edusperoni

packages/angular/src/lib/view-util.ts

@@ -490,11 +490,6 @@ export class ViewUtil {
     const propMap = this.getProperties(view);
     const propertyName = propMap.get(attributeName);
 
-    // Ensure the children of a collection currently have no parent set.
-    if (Array.isArray(value)) {
-      this.removeParentReferencesFromItems(value);
-    }
-
     if (propertyName) {
       // We have a lower-upper case mapped property.
       view[propertyName] = value;
@@ -505,18 +500,6 @@ export class ViewUtil {
     view[attributeName] = value;
   }
 
-  private removeParentReferencesFromItems(items: any[]): void {
-    for (const item of items) {
-      if (item.parent && item.parentNode) {
-        if (NativeScriptDebug.isLogEnabled()) {
-          NativeScriptDebug.viewUtilLog(`Unassigning parent ${item.parentNode} on value: ${item}`);
-        }
-        item.parent = undefined;
-        item.parentNode = undefined;
-      }
-    }
-  }
-
   private getProperties(instance: any): Map<string, string> {
     const type = instance && instance.constructor;
     if (!type) {