[Predictive Back][Search] Fixed UnsupportedOperationException AnimatorSet crash in SearchView.

When navigation icon animation is disabled after the predictive back navigation icon animators are initialized, a strange crash happens in `SearchViewAnimatorSet#updateBackProgress` from the call to `AnimatorSet#setCurrentPlayTime()`, in which the button progress `AnimatorSet` duration is 250 but the total duration is 0. This triggers an [`UnsupportedOperationException`](https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/animation/AnimatorSet.java#928) with the message: `"Error: Play time should always be in between 0 and duration."`.

Adding an early return from `SearchViewAnimatorSet#updateBackProgress` when navigation animation is disabled appears to fix the crash.

PiperOrigin-RevId: 550885523

Author: afohrman

lib/java/com/google/android/material/search/SearchViewAnimationHelper.java

@@ -629,6 +629,11 @@ public void updateBackProgress(@NonNull BackEventCompat backEvent) {
         searchView.clearFocusAndHideKeyboard();
       }
 
+      // Early return if navigation icon animation is disabled.
+      if (!searchView.isAnimatedNavigationIcon()) {
+        return;
+      }
+
       // Start and immediately pause the animator set so we can seek it with setCurrentPlayTime() in
       // subsequent updateBackProgress() calls when the progress value changes.
       backProgressAnimatorSet = getButtonsProgressAnimator(/* show= */ false);