Fixed the review comments

Author: anilsahoo20

docs/en_US/images/preferences_browser_display.png

@@ -60,7 +60,8 @@ Use the fields on the *Display* panel to specify general display preferences:
   all the shared servers from the object explorer. **Note:** This option is visible only when
   pgAdmin is running in server mode.
 
-* When the *Show column data type?* switch is turned on, then the data types of the columns will be displayed.
+* When the *Show column data type?* switch is turned on, then the data types 
+  of the columns will be displayed alongside their column names.
 
 * When the *Show empty object collections?* switch is turned off, then all object
   collections which are empty will be hidden from browser tree.

docs/en_US/preferences.rst

@@ -38,7 +38,8 @@ def register_browser_preferences(self):
         gettext("Show column data type?"), 'boolean', False,
         category_label=PREF_LABEL_DISPLAY,
         help_str=gettext(
-            'If turned on, then the data type of columns will be displayed.'
+            'If turned on, then the data types of the columns '
+            'will be displayed alongside their column names.'
         )
     )
 

web/pgadmin/browser/register_browser_preferences.py

@@ -45,7 +45,7 @@ define('pgadmin.node.column', [
       // Overriding getNodeLabel to add datatype besides column name
       getNodeLabel: function(data) {
         let show_column_datatype = usePreferences.getState().getPreferences('browser', 'show_column_datatype');
-        let label = data._label;
+        let label = data.label;
         if (show_column_datatype?.value && data.datatype && data.displaytypname) {
           label += ` ${data.displaytypname}`;
         }

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/static/js/column.js

@@ -100,7 +100,7 @@ define('pgadmin.browser.node', [
       return d;
     },
     getNodeLabel: function(data) {
-      return data._label;
+      return data.label;
     },
     hasId: true,
     ///////

web/pgadmin/browser/static/js/node.js

@@ -59,13 +59,8 @@ export class ManageTreeNodes {
 
   public addNode = (_parent: string, _path: string, _data: []) => new Promise((res) => {
     _data.type = _data.inode ? FileType.Directory : FileType.File;
-    _data._label = _data.label;
 
-    const nodeClass = pgAdmin.Browser.Nodes[_data._type];
-
-    if (nodeClass && typeof nodeClass.getNodeLabel === 'function') {
-      _data._label = nodeClass.getNodeLabel(_data);
-    }
+    _data._label = pgAdmin.Browser.Nodes[_data._type]?.getNodeLabel(_data);
 
     _data.label = _.escape(_data.label);