Canvas grid enabled state modified into context to avoid spurious dea…

…ctivation upon widget addition/removal.

Signed-off-by: Gautier Taravella <tarag@mailbox.org>

bundles/org.openhab.ui/web/src/components/widgets/layout/oh-canvas-layout.vue

@@ -18,7 +18,7 @@
           "
           icon-f7="square_on_square" />
         <f7-menu-item
-          @click="grid.enable = !grid.enable"
+          @click="toggleGrid()"
           :icon-f7="grid.enable ? 'circle_grid_3x3_fill' : 'scircle_grid_3x3'"
           style="margin-left: auto" />
         <f7-menu-item
@@ -229,6 +229,9 @@ export default {
         }
       })
     },
+    toggleGrid () {
+      this.context.component.config.gridEnable = this.grid.enable = !this.grid.enable
+    },
     canvasLayoutStyle: function () {
       if (this.config.scale && !this.context.editmode) {
         this.style.scale = parent.innerWidth / this.screenWidth