Add wxStyledTextCtrl::AutoCompGetCurrentText()

Added support for SCI_AUTOCGETCURRENTTEXT API.

Closes #16263.

include/wx/stc/stc.h

@@ -4498,6 +4498,9 @@ public:
     // Get currently selected item position in the auto-completion list
     int AutoCompGetCurrent() const;
 
+    // Get currently selected item text in the auto-completion list
+    wxString AutoCompGetCurrentText() const;
+
     // Set auto-completion case insensitive behaviour to either prefer case-sensitive matches or have no preference.
     void AutoCompSetCaseInsensitiveBehaviour(int behaviour);