UI: fixed issue on callsign's last character editing

When editing the callsign on a device with keypad, when entering the last
character the same key did not rotate through the possible values

openrtx/src/ui/default/ui.c

@@ -1093,11 +1093,12 @@ static void _ui_textInputReset(char *buf)
 static void _ui_textInputKeypad(char *buf, uint8_t max_len, kbd_msg_t msg,
                          bool callsign)
 {
-    if(ui_state.input_position >= max_len)
-        return;
     long long now = getTick();
     // Get currently pressed number key
     uint8_t num_key = input_getPressedNumber(msg);
+
+    bool key_timeout = ((now - ui_state.last_keypress) >= input_longPressTimeout);
+    bool same_key = ui_state.input_number == num_key;
     // Get number of symbols related to currently pressed key
     uint8_t num_symbols = 0;
     if(callsign)
@@ -1105,11 +1106,14 @@ static void _ui_textInputKeypad(char *buf, uint8_t max_len, kbd_msg_t msg,
     else
         num_symbols = strlen(symbols_ITU_T_E161[num_key]);
 
+    if((ui_state.input_position > max_len) || ((ui_state.input_position == max_len) && (key_timeout || !same_key)))
+        return;
+
     // Skip keypad logic for first keypress
     if(ui_state.last_keypress != 0)
     {
         // Same key pressed and timeout not expired: cycle over chars of current key
-        if((ui_state.input_number == num_key) && ((now - ui_state.last_keypress) < input_longPressTimeout))
+        if(same_key && !key_timeout)
         {
             ui_state.input_set = (ui_state.input_set + 1) % num_symbols;
         }