fix(angular): apply validation classes properly

* fix(angular): add validation classes to ion-item

* fix(inputs): focus handling

fixes #17171
fixes #16052
fixes #15572
fixes #16452
fixes #17063

core/src/components/datetime/datetime.tsx

@@ -246,6 +246,7 @@ export class Datetime implements ComponentInterface {
 
   @Listen('click')
   onClick() {
+    this.setFocus();
     this.open();
   }