fix: Status bar cursor position updates when workspace is first opened

The cursor position label in the status bar was not updating until the
first tab switch because it only subscribed to tabBarTabIdSubject (which
fires on tab changes) and onAppear (which may fire before a tab is
selected during workspace restoration).

Added an additional observer on editorManager.$activeEditor so the
label updates whenever the active editor changes, including on initial
workspace open.

Fixes #1729

Author: William-Laverty

CodeEdit/Features/StatusBar/Views/StatusBarItems/StatusBarCursorPositionLabel.swift

@@ -38,6 +38,9 @@ struct StatusBarCursorPositionLabel: View {
         .onReceive(editorManager.tabBarTabIdSubject) { _ in
             updateSource()
         }
+        .onReceive(editorManager.$activeEditor) { _ in
+            updateSource()
+        }
     }
 
     struct LineLabel: View {