fix(filter-chip): make click event preventDefault proof

chips/internal/filter-chip.ts

@@ -10,6 +10,7 @@ import {html, nothing, PropertyValues, svg, TemplateResult} from 'lit';
 import {property, query} from 'lit/decorators.js';
 
 import {ARIAMixinStrict} from '../../internal/aria/aria.js';
+import {redispatchEvent} from '../../internal/controller/events.js';
 
 import {MultiActionChip} from './multi-action-chip.js';
 import {renderRemoveButton} from './trailing-icons.js';
@@ -22,6 +23,9 @@ export class FilterChip extends MultiActionChip {
   @property({type: Boolean}) removable = false;
   @property({type: Boolean, reflect: true}) selected = false;
 
+  // flag to prvent processing of re-dispatched input event.
+  private isRedispatchingEvent = false;
+
   protected get primaryId() {
     return 'option';
   }
@@ -35,11 +39,23 @@ export class FilterChip extends MultiActionChip {
     // Remove the `row` role from the container, since filter chips do not use a
     // `grid` navigation model.
     this.containerRole = undefined;
-    this.addEventListener('click', () => {
+    this.addEventListener('click', (event) => {
+      // avoid processing a re-dispatched event
+      if (this.isRedispatchingEvent) {
+        return;
+      }
+
       if (this.disabled) {
         return;
       }
 
+      this.isRedispatchingEvent = true;
+      const preventDefault = !redispatchEvent(this, event);
+      this.isRedispatchingEvent = false;
+      if (preventDefault) {
+        return;
+      }
+
       this.selected = !this.selected;
     });
   }

chips/internal/filter-chip_test.ts

@@ -76,5 +76,19 @@ describe('Filter chip', () => {
          await harness.clickWithMouse();
          expect(handler).toHaveBeenCalledTimes(2);
        });
+
+    it('can prevent default', async () => {
+      const {chip, harness} = await setupTest();
+      const handler = jasmine.createSpy();
+      chip.addEventListener('selected', handler);
+
+       chip.addEventListener('click', (event) => {
+         event.preventDefault();
+       })
+
+       await harness.clickWithMouse();
+       await harness.clickWithMouse();
+       expect(handler).toHaveBeenCalledTimes(0);
+    })
   });
 });