Fix duplicate PayPal screen reader announcement (#2655)

* Fix duplicate PayPal screen reader announcement by giving the smart button stack's iframe a distinct title (PayPal Payment Buttons)

* removing unrelated trailing comma changes

Author: divyanshi-srivastava

src/zoid/buttons/component.jsx

@@ -231,16 +231,16 @@ export const getButtonsComponent: () => ButtonsComponent = memoize(() => {
     },
 
     attributes: ({ props }) => {
-      let fundingSource = "";
-      if (props.fundingSource) {
-        fundingSource = `-${props.fundingSource}`;
-      }
+      // avoid title colliding when no fundingSource is set
+      const title = props.fundingSource
+        ? `${FUNDING_BRAND_LABEL.PAYPAL}-${props.fundingSource}`
+        : `${FUNDING_BRAND_LABEL.PAYPAL} Payment Buttons`;
 
       return {
         iframe: {
           allowpaymentrequest: "allowpaymentrequest",
           scrolling: "no",
-          title: `${FUNDING_BRAND_LABEL.PAYPAL}${fundingSource}`,
+          title,
           role: "presentation",
         },
       };