System shortcuts crash the Editor when Global Preferences are open (#6994)

* Changes to the keyPressEvent override of the Editor Preferences Dialog to prevent infinite loops on focus switches.

Signed-off-by: Danilo Aimini <82231674+AMZN-daimini@users.noreply.github.com>

* Renaming function to clarify its purpose.

Signed-off-by: Danilo Aimini <82231674+AMZN-daimini@users.noreply.github.com>

Code/Editor/EditorPreferencesDialog.cpp

@@ -112,29 +112,31 @@ void EditorPreferencesDialog::showEvent(QShowEvent* event)
     QDialog::showEvent(event);
 }
 
-void WidgetHandleKeyPressEvent(QWidget* widget, QKeyEvent* event)
+bool WidgetConsumesKeyPressEvent(QKeyEvent* event)
 {
     // If the enter key is pressed during any text input, the dialog box will close
     // making it inconvenient to do multiple edits. This routine captures the
     // Key_Enter or Key_Return and clears the focus to give a visible cue that
-    // editing of that field has finished and then doesn't propogate it.
+    // editing of that field has finished and then doesn't propagate it.
     if (event->key() != Qt::Key::Key_Enter && event->key() != Qt::Key::Key_Return)
     {
-        QApplication::sendEvent(widget, event);
+        return false;
     }
-    else
+   
+    if (QWidget* editWidget = QApplication::focusWidget())
     {
-        if (QWidget* editWidget = QApplication::focusWidget())
-        {
-            editWidget->clearFocus();
-        }
+        editWidget->clearFocus();
     }
-}
 
+    return true;
+}
 
 void EditorPreferencesDialog::keyPressEvent(QKeyEvent* event)
 {
-    WidgetHandleKeyPressEvent(this, event);
+    if (!WidgetConsumesKeyPressEvent(event))
+    {
+        QDialog::keyPressEvent(event);
+    }
 }
 
 void EditorPreferencesDialog::OnTreeCurrentItemChanged()