fix(popover): move filter to popover tip variant; disable box shadow

Author: cdransf

components/popover/index.css

@@ -1,5 +1,5 @@
 /*!
- * Copyright 2024 Adobe. All rights reserved.
+ * Copyright 2025 Adobe. All rights reserved.
  *
  * This file is licensed to you under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License. You may obtain a copy
@@ -75,6 +75,8 @@
 	&.spectrum-Popover--withTip {
 		/* Prevents clipping of the tip */
 		overflow: visible;
+		filter: var(--mod-popover-filter, var(--spectrum-popover-filter));
+		box-shadow: none;
 
 		.spectrum-Popover-tip {
 			/* triangle polygon */