fix(editor): support Cmd key for editor shortcuts on macOS

Editor keyboard shortcuts (save, delete, duplicate) only checked
event.ctrlKey, so Cmd+D/Cmd+Enter/Cmd+Delete on macOS fell through
to the browser's default shortcuts instead of triggering the
calendar action.

Fixes #8715

Signed-off-by: xhon-pelushi <xhon@pelushi.com>

Author: xhon-pelushi

src/mixins/EditorMixin.js

@@ -634,17 +634,17 @@ export default {
 			}
 		},
 		keyboardSaveEvent(event) {
-			if (event.key === 'Enter' && event.ctrlKey === true && !this.isReadOnly && !this.canCreateRecurrenceException) {
+			if (event.key === 'Enter' && (event.ctrlKey || event.metaKey) && !this.isReadOnly && !this.canCreateRecurrenceException) {
 				this.saveAndLeave(false)
 			}
 		},
 		keyboardDeleteEvent(event) {
-			if (event.key === 'Delete' && event.ctrlKey === true && this.canDelete && !this.canCreateRecurrenceException) {
+			if (event.key === 'Delete' && (event.ctrlKey || event.metaKey) && this.canDelete && !this.canCreateRecurrenceException) {
 				this.deleteAndLeave(false)
 			}
 		},
 		keyboardDuplicateEvent(event) {
-			if (event.key === 'd' && event.ctrlKey === true) {
+			if (event.key === 'd' && (event.ctrlKey || event.metaKey)) {
 				event.preventDefault()
 				if (!this.isNew && !this.isReadOnly && !this.canCreateRecurrenceException) {
 					this.duplicateEvent()