Don't handle special keys as characters in wxSTC in non-Unicode build

Correct the check for non-special keys when wxUSE_UNICODE==0.

Closes #17598.

(cherry picked from commit ab092c8d13)

docs/changes.txt

@@ -613,6 +613,7 @@ All (GUI):
 - Accept wxALIGN_CENTRE_HORIZONTAL in wxStaticText XRC handler (David Hart).
 - Fix appearance after updating a wxGrid with hidden rows/columns (iwbnwif).
 - Make wxAuiNotebookXmlHandler actually work.
+- Fix key handling in wxStyledTextCtrl in non-Unicode build (David Costanzo).
 
 wxGTK:
 

src/stc/stc.cpp

@@ -4749,7 +4749,7 @@ void wxStyledTextCtrl::OnChar(wxKeyEvent& evt) {
         }
 #else
         int key = evt.GetKeyCode();
-        if (key <= WXK_START || key > WXK_COMMAND) {
+        if (key < WXK_START) {
             m_swx->DoAddChar(key);
             return;
         }

src/stc/stc.cpp.in

@@ -887,7 +887,7 @@ void wxStyledTextCtrl::OnChar(wxKeyEvent& evt) {
         }
 #else
         int key = evt.GetKeyCode();
-        if (key <= WXK_START || key > WXK_COMMAND) {
+        if (key < WXK_START) {
             m_swx->DoAddChar(key);
             return;
         }