Fix Android crash when changing shared Drawable tint on Searchbar (dotnet#33071)

App crashes because of changing a shared Drawable on the fly. I found
out it is the SearchBar. It only happens on Android and in large apps
with lots of screens. Unfortunately I can't reproduce it in the
TestSuite. But by reading the docs of Android this crash is common and
caused by changing a Drawable which is still referenced. With a custom
SearchBarHandler the issues is resolved.

```Backtrace (top frames):
  #00 pc 00000000006b8694  /system/lib64/libhwui.so
      android::getRootAlpha(_JNIEnv*, _jobject*, long) +4

  #1 pc 0000000002256c90  /memfd:jit-cache (deleted)
      art_jni_trampoline +112

  #2 pc 000000000223bc4c  /memfd:jit-cache (deleted)
      android.graphics.drawable.VectorDrawable.-$$Nest$smnGetRootAlpha +108

  #3 pc 000000000223bb20  /memfd:jit-cache (deleted)
      android.graphics.drawable.VectorDrawable$VectorDrawableState.getAlpha +144

  #4 pc 00000000025c50e0  /memfd:jit-cache (deleted)
      android.graphics.drawable.VectorDrawable.getAlpha +128

  #5 pc 00000000025c4f9c  /memfd:jit-cache (deleted)
      android.graphics.drawable.VectorDrawable.getOpacity +124

  #6 pc 00000000025c1ea8  /memfd:jit-cache (deleted)
      android.widget.ImageView.isOpaque +152

  #7 pc 000000000227979c  /memfd:jit-cache (deleted)
      android.view.View.invalidateInternal +428

  #8 pc 00000000025c4790  /memfd:jit-cache (deleted)
      android.widget.ImageView.invalidateDrawable +256

  #9 pc 000000000224419c  /memfd:jit-cache (deleted)
      android.graphics.drawable.Drawable.invalidateSelf +156

  #10 pc 000000000260e710  /memfd:jit-cache (deleted)
      android.graphics.drawable.VectorDrawable.setTintList +192

  #11 pc 00000000025d0094  /memfd:jit-cache (deleted)
      **android.graphics.drawable.Drawable.setTint +148**
```

### Description of Change

- Changes tinting of Androids SearchBar to unified setTint instead of
setColorFilter
-  Mutates the drawable before setting the tint.

### Issues Fixed
Issue is fixed with a custom handler for now.

Fixes dotnet#33070

Author: tritter

src/Core/src/Platform/Android/SearchViewExtensions.cs

@@ -44,7 +44,7 @@ public static void UpdatePlaceholderColor(this SearchView searchView, ISearchBar
 				editText.SetHintTextColor(color);
 
 				var searchMagIconImage = searchView.FindViewById<ImageView>(Resource.Id.search_mag_icon);
-				searchMagIconImage?.Drawable?.SetTint(color);
+				SafeSetTint(searchMagIconImage, color);
 			}
 		}
 
@@ -57,7 +57,7 @@ internal static void UpdateTextColor(this SearchView searchView, ITextStyle entr
 					editText.SetTextColor(color);
 
 				var searchMagIconImage = searchView.FindViewById<ImageView>(Resource.Id.search_mag_icon);
-				searchMagIconImage?.Drawable?.SetTint(color);
+				SafeSetTint(searchMagIconImage, color);
 			}
 		}
 
@@ -129,14 +129,10 @@ public static void UpdateCancelButtonColor(this SearchView searchView, ISearchBa
 			if (searchCloseButtonIdentifier > 0)
 			{
 				var image = searchView.FindViewById<ImageView>(searchCloseButtonIdentifier);
-
-				if (image is not null && image.Drawable is Drawable drawable)
-				{
-					if (searchBar.CancelButtonColor is not null)
-						drawable.SetColorFilter(searchBar.CancelButtonColor, FilterMode.SrcIn);
-					else if (TryGetDefaultStateColor(searchView, AAttribute.TextColorPrimary, out var color))
-						drawable.SetColorFilter(color, FilterMode.SrcIn);
-				}
+				if (searchBar.CancelButtonColor is not null)
+					SafeSetTint(image, searchBar.CancelButtonColor.ToPlatform());
+				else if (TryGetDefaultStateColor(searchView, AAttribute.TextColorPrimary, out var color))
+					SafeSetTint(image, color);
 			}
 		}
 
@@ -154,9 +150,9 @@ internal static void UpdateSearchIconColor(this SearchView searchView, ISearchBa
 				if (image?.Drawable is not null)
 				{
 					if (searchBar.SearchIconColor is not null)
-						image.Drawable.SetColorFilter(searchBar.SearchIconColor, FilterMode.SrcIn);
+						SafeSetTint(image, searchBar.SearchIconColor.ToPlatform());
 					else
-						image.Drawable.ClearColorFilter();
+						SafeSetTint(image, Color.Transparent);
 				}
 			}
 		}
@@ -240,5 +236,24 @@ static bool TryGetDefaultStateColor(SearchView searchView, int attribute, out Co
 			color = new Color(cs.GetColorForState(state, Color.Black));
 			return true;
 		}
+
+		/// <summary>
+		/// Safely applies tint to an ImageView's drawable by mutating it first.
+		/// This prevents crashes when the drawable is shared across multiple views.
+		/// </summary>
+		/// <remarks>
+		/// Android shares Drawable resources for memory efficiency. Modifying a shared
+		/// drawable without calling Mutate() first causes race conditions and crashes.
+		/// See: https://developer.android.com/reference/android/graphics/drawable/Drawable#mutate()
+		/// </remarks>
+		internal static void SafeSetTint(ImageView? imageView, Color color)
+		{
+			if (imageView?.Drawable is not Drawable drawable)
+				return;
+
+			var safe = drawable.Mutate();
+			safe.SetTint(color);
+			imageView?.SetImageDrawable(safe);
+		}
 	}
-}
+}