fix drag ang drop in firefox (#718)

Author: piitaya

src/cards/chips-card/chips-card-chips-editor.ts

@@ -63,7 +63,9 @@ export class ChipsCardEditorChips extends MushroomBaseElement {
                         : this.chips!.map(
                               (chipConf, index) => html`
                                   <div class="chip">
-                                      <ha-icon class="handle" icon="mdi:drag"></ha-icon>
+                                      <div class="handle">
+                                          <ha-icon icon="mdi:drag"></ha-icon>
+                                      </div>
                                       ${html`
                                           <div class="special-row">
                                               <div>
@@ -287,6 +289,10 @@ export class ChipsCardEditorChips extends MushroomBaseElement {
                     cursor: move;
                 }
 
+                .chip .handle > * {
+                    pointer-events: none;
+                }
+
                 .special-row {
                     height: 60px;
                     font-size: 16px;