misc: constify the remaining for loops (#7534)

now we roll loops at blazing constified speed.

src/protocols/VirtualKeyboard.cpp

@@ -108,7 +108,7 @@ void CVirtualKeyboardV1Resource::releasePressed() {
     timespec now;
     clock_gettime(CLOCK_MONOTONIC, &now);
 
-    for (auto& p : pressed) {
+    for (auto const& p : pressed) {
         events.key.emit(IKeyboard::SKeyEvent{
             .timeMs  = now.tv_sec * 1000 + now.tv_nsec / 1000000,
             .keycode = p,