Initialize button ID sets on connection

Author: renonick87

lib/js/src/manager/screen/_ScreenManagerBase.js

@@ -77,6 +77,10 @@ class _ScreenManagerBase extends _SubManagerBase {
             this._choiceSetManagerBase.start(),
             this._menuManagerBase.start(),
         ]);
+
+        _ScreenManagerBase._softButtonIDBySoftButtonManager = new Set();
+        _ScreenManagerBase._softButtonIDByAlertManager = new Set();
+
         this._transitionToState(_SubManagerBase.READY);
         await super.start();
     }
@@ -743,9 +747,6 @@ _ManagerLocation._MAP = Object.freeze({
 
 _ScreenManagerBase._ManagerLocation = _ManagerLocation;
 
-_ScreenManagerBase._softButtonIDBySoftButtonManager = new Set();
-_ScreenManagerBase._softButtonIDByAlertManager = new Set();
-
 const SOFT_BUTTON_ID_NOT_SET_VALUE = -1;
 const SOFT_BUTTON_ID_MIN_VALUE = 0;
 const SOFT_BUTTON_ID_MAX_VALUE = 10000;