[ShapeableImageView] Don't change layer type when view is detached from the window

When the exit transition starts, the layer type is set to LAYER_TYPE_NONE (inside onDetachedFromWindow). In this case, clearPaint (Paint with Xfermode = PorterDuff.Mode.DST_OUT) stops working correctly.
The patch just deletes the layer type setup from onDetachedFromWindow, leaving the layer type set to LAYER_TYPE_HARDWARE.

Resolves #2703
Resolves #2792

GIT_ORIGIN_REV_ID=b05230b40529251b8b16cc02f1cfd64f3801c1d8
PiperOrigin-RevId: 459308833

Author: pubiqq

lib/java/com/google/android/material/imageview/ShapeableImageView.java

@@ -108,6 +108,8 @@ public ShapeableImageView(Context context, @Nullable AttributeSet attrs, int def
         context.obtainStyledAttributes(
             attrs, R.styleable.ShapeableImageView, defStyle, DEF_STYLE_RES);
 
+    setLayerType(LAYER_TYPE_HARDWARE, null);
+
     strokeColor =
         MaterialResources.getColorStateList(
             context, attributes, R.styleable.ShapeableImageView_strokeColor);
@@ -150,18 +152,6 @@ public ShapeableImageView(Context context, @Nullable AttributeSet attrs, int def
     }
   }
 
-  @Override
-  protected void onDetachedFromWindow() {
-    setLayerType(LAYER_TYPE_NONE, null);
-    super.onDetachedFromWindow();
-  }
-
-  @Override
-  protected void onAttachedToWindow() {
-    super.onAttachedToWindow();
-    setLayerType(LAYER_TYPE_HARDWARE, null);
-  }
-
   @Override
   protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
     super.onMeasure(widthMeasureSpec, heightMeasureSpec);