Clear the emoji picker search when the dialog is closed

Clear the emoji picker search when the dialog is closed

BUG: 472873

src/qml/EmojiDialog.qml

@@ -31,6 +31,7 @@ QQC2.Popup {
 
     onVisibleChanged: {
         if (!visible) {
+            emojiPicker.clearSearchField()
             return
         }
         emojiPicker.forceActiveFocus()

src/qml/EmojiPicker.qml

@@ -206,4 +206,8 @@ ColumnLayout {
             onClicked: stickerModel.packIndex = model.index
         }
     }
+
+    function clearSearchField() {
+        searchField.text = ""
+    }
 }