perf(combo): avoid triggering pipeline for state updates setting same data

Author: damyanpetev

src/components/combo/combo.ts

@@ -181,6 +181,9 @@ export default class IgcComboComponent<
   /* treatAsRef */
   @property({ attribute: false })
   public set data(value: T[]) {
+    if (this._data === value) {
+      return;
+    }
     this._data = asArray(value);
     const pristine = this._pristine;
     this.value = asArray(this.value);