Feat: exposing getter setter for widget manager from edit_session cre…

…ated using line widgets

src/edit_session.js

@@ -49,7 +49,6 @@ class EditSession {
         this.$undoSelect = true;
         this.$editor = null;
         this.prevOp = {};
-        this.$widgetManager = null;
 
         /** @type {FoldLine[]} */
         this.$foldData = [];
@@ -197,13 +196,14 @@ class EditSession {
      * @returns {LineWidgets} object
      */
     get widgetManager() {
-        if(!this.$widgetManager) {
-        this.$widgetManager = new LineWidgets(this);
+        const widgetManager = new LineWidgets(this);
+        // todo remove the widgetManger assignement from lineWidgets constructor when introducing breaking changes
+        this.widgetManager = widgetManager;
+
+        if (this.$editor)
+            widgetManager.attach(this.$editor);
 
-            if (this.$editor)
-                this.$widgetManager.attach(this.$editor);
-            }
-       return this.$widgetManager;
+        return widgetManager;
     }
 
     /**
@@ -218,7 +218,6 @@ class EditSession {
             configurable: true,
             value: value,
         });
-        this.$widgetManager = value;
     }
     /**
      * @param {Number} docRow The row to work with