fix(ui5-popup): restore focus when block layer is clicked (#2123)

Author: fifoosid

packages/main/src/Popup.js

@@ -207,7 +207,7 @@ class Popup extends UI5Element {
 	/**
 	 * Prevents the user from interacting with the content under the block layer
 	 */
-	_onBlockLayerKeyDown(event) {
+	_preventBlockLayerFocus(event) {
 		event.preventDefault();
 	}
 

packages/main/src/PopupBlockLayer.hbs

@@ -2,5 +2,6 @@
     ?hidden={{_blockLayerHidden}}
     tabindex="1"
     style="{{styles.blockLayer}}"
-	@keydown="{{_onBlockLayerKeyDown}}">
+	@keydown="{{_preventBlockLayerFocus}}"
+    @mousedown="{{_preventBlockLayerFocus}}">
 </div>