Revert "refactor: localize checkLayoutChange() check"

This reverts commit c459faba

Fixes kwin_x11 crash on typing regression,
see original MR for details

keyboard_input.cpp

@@ -197,14 +197,9 @@ void KeyboardInputRedirection::processKey(uint32_t key, InputRedirection::Keyboa
         Q_UNREACHABLE();
     }
 
+    const quint32 previousLayout = m_xkb->currentLayout();
     if (!autoRepeat) {
-        const quint32 previousLayout = m_xkb->currentLayout();
-
         m_xkb->updateKey(key, state);
-
-        if (m_xkb->modifiers() == Qt::KeyboardModifier::NoModifier && type != QEvent::KeyRelease) {
-            m_keyboardLayout->checkLayoutChange(previousLayout);
-        }
     }
 
     const xkb_keysym_t keySym = m_xkb->currentKeysym();
@@ -226,6 +221,10 @@ void KeyboardInputRedirection::processKey(uint32_t key, InputRedirection::Keyboa
     m_input->processFilters(std::bind(&InputEventFilter::keyEvent, std::placeholders::_1, &event));
 
     m_xkb->forwardModifiers();
+
+    if (event.modifiersRelevantForGlobalShortcuts() == Qt::KeyboardModifier::NoModifier && type != QEvent::KeyRelease) {
+        m_keyboardLayout->checkLayoutChange(previousLayout);
+    }
 }
 
 void KeyboardInputRedirection::processModifiers(uint32_t modsDepressed, uint32_t modsLatched, uint32_t modsLocked, uint32_t group)