Support i18n of lock/unlock button in flow property UI

packages/node_modules/@node-red/editor-client/locales/en-US/editor.json

@@ -25,7 +25,9 @@
             "disable": "Disable",
             "upload": "Upload",
             "lock": "Lock",
-            "unlock": "Unlock"
+            "unlock": "Unlock",
+            "locked": "Locked",
+            "unlocked": "Unlocked"
         },
         "type": {
             "string": "string",

packages/node_modules/@node-red/editor-client/locales/ja/editor.json

@@ -25,7 +25,9 @@
             "disable": "無効",
             "upload": "アップロード",
             "lock": "固定",
-            "unlock": "固定を解除"
+            "unlock": "固定を解除",
+            "locked": "固定済み",
+            "unlocked": "固定なし"
         },
         "type": {
             "string": "文字列",

packages/node_modules/@node-red/editor-client/src/js/ui/editor.js

@@ -1922,9 +1922,9 @@ RED.editor = (function() {
                     workspace.locked = false;
                 }
                 $('<input id="node-input-locked" type="checkbox">').prop("checked",workspace.locked).appendTo(trayFooterRight).toggleButton({
-                    enabledLabel: 'Unlocked',
+                    enabledLabel: RED._("common.label.unlocked"),
                     enabledIcon: "fa-unlock-alt",
-                    disabledLabel: 'Locked',
+                    disabledLabel: RED._("common.label.locked"),
                     disabledIcon: "fa-lock",
                     invertState: true
                 })