[Tab][a11y] Fix title being announced twice when there's a badge in TalkBack mode.

Resolves #3985

PiperOrigin-RevId: 600854666
(cherry picked from commit ef60931)

Author: leticiarossi

lib/java/com/google/android/material/tabs/TabLayout.java

@@ -2678,12 +2678,10 @@ public void setSelected(final boolean selected) {
     @Override
     public void onInitializeAccessibilityNodeInfo(@NonNull AccessibilityNodeInfo info) {
       super.onInitializeAccessibilityNodeInfo(info);
+      AccessibilityNodeInfoCompat infoCompat = AccessibilityNodeInfoCompat.wrap(info);
       if (badgeDrawable != null && badgeDrawable.isVisible()) {
-        CharSequence customContentDescription = getContentDescription();
-        info.setContentDescription(
-            customContentDescription + ", " + badgeDrawable.getContentDescription());
+        infoCompat.setContentDescription(badgeDrawable.getContentDescription());
       }
-      AccessibilityNodeInfoCompat infoCompat = AccessibilityNodeInfoCompat.wrap(info);
       infoCompat.setCollectionItemInfo(
           CollectionItemInfoCompat.obtain(
               /* rowIndex= */ 0,