[ExposedDropDownMenu] Changed the editable exposed dropdown menu's a1…

…1y class name to be EditText instead of a drop down since the primary action for the user is to type.

PiperOrigin-RevId: 317650366

lib/java/com/google/android/material/textfield/DropdownMenuEndIconDelegate.java

@@ -105,8 +105,10 @@ public void onFocusChange(View v, boolean hasFocus) {
         public void onInitializeAccessibilityNodeInfo(
             View host, @NonNull AccessibilityNodeInfoCompat info) {
           super.onInitializeAccessibilityNodeInfo(host, info);
-          // The exposed dropdown menu behaves like a Spinner.
-          info.setClassName(Spinner.class.getName());
+          // The non-editable exposed dropdown menu behaves like a Spinner.
+          if (textInputLayout.getEditText().getKeyListener() == null) {
+            info.setClassName(Spinner.class.getName());
+          }
           if (info.isShowingHintText()) {
             // Set hint text to null so TalkBack doesn't announce the label twice when there is no
             // item selected.