[Slider] Fix slider label not moving

Resolves #4104

GIT_ORIGIN_REV_ID=676308a77b429610192b1df80becb656e6053811
PiperOrigin-RevId: 666511279

lib/java/com/google/android/material/slider/BaseSlider.java

@@ -349,6 +349,9 @@ abstract class BaseSlider<
   @NonNull
   private final ViewTreeObserver.OnScrollChangedListener onScrollChangedListener =
       this::updateLabels;
+  @NonNull
+  private final ViewTreeObserver.OnGlobalLayoutListener onGlobalLayoutListener =
+      this::updateLabels;
 
   /**
    * Determines the behavior of the label which can be any of the following.
@@ -1883,6 +1886,7 @@ public void setEnabled(boolean enabled) {
   protected void onAttachedToWindow() {
     super.onAttachedToWindow();
     getViewTreeObserver().addOnScrollChangedListener(onScrollChangedListener);
+    getViewTreeObserver().addOnGlobalLayoutListener(onGlobalLayoutListener);
     // The label is attached on the Overlay relative to the content.
     for (TooltipDrawable label : labels) {
       attachLabelToContentView(label);
@@ -1904,6 +1908,7 @@ protected void onDetachedFromWindow() {
       detachLabelFromContentView(label);
     }
     getViewTreeObserver().removeOnScrollChangedListener(onScrollChangedListener);
+    getViewTreeObserver().removeOnGlobalLayoutListener(onGlobalLayoutListener);
     super.onDetachedFromWindow();
   }