fix(tooltip): Change foundation to check for "dialog" on the anchor element's aria-haspopup attribute instead of checking for "true".

PiperOrigin-RevId: 351157093

Author: Shi Shu

packages/mdc-tooltip/foundation.ts

@@ -142,7 +142,7 @@ export class MDCTooltipFoundation extends MDCFoundation<MDCTooltipAdapter> {
         this.adapter.getAttribute(attributes.PERSISTENT) === 'true';
     this.interactiveTooltip =
         !!this.adapter.getAnchorAttribute(attributes.ARIA_EXPANDED) &&
-        this.adapter.getAnchorAttribute(attributes.ARIA_HASPOPUP) === 'true';
+        this.adapter.getAnchorAttribute(attributes.ARIA_HASPOPUP) === 'dialog';
   }
 
   isShown() {

packages/mdc-tooltip/test/component.test.ts

@@ -297,7 +297,7 @@ describe('MDCTooltip', () => {
   describe('default interactive rich tooltip tests', () => {
     beforeEach(() => {
       fixture = getFixture(`<div>
-        <button aria-describedby="tt0" aria-haspopup="true" aria-expanded="false">
+        <button aria-describedby="tt0" aria-haspopup="dialog" aria-expanded="false">
           anchor
         </button>
         <div id="tt0" class="mdc-tooltip mdc-tooltip--rich" aria-hidden="true" role="dialog">

packages/mdc-tooltip/test/foundation.test.ts

@@ -100,7 +100,7 @@ function setUpFoundationTestForRichTooltip(
   mockAdapter.getAnchorAttribute.withArgs(attributes.ARIA_EXPANDED)
       .and.returnValue(isInteractive ? 'false' : null);
   mockAdapter.getAnchorAttribute.withArgs(attributes.ARIA_HASPOPUP)
-      .and.returnValue(isInteractive ? 'true' : 'false');
+      .and.returnValue(isInteractive ? 'dialog' : 'false');
   foundation.init();
 
   return {foundation, mockAdapter};