Fix tile rect leaving map grid on paint, cursor rects not updating state on collision tab

include/editor.h

@@ -177,6 +177,7 @@ private:
     QString getMovementPermissionText(uint16_t collision, uint16_t elevation);
     QString getMetatileDisplayMessage(uint16_t metatileId);
     bool eventLimitReached(Map *, QString);
+    bool isWithinMap(int x, int y);
     bool startDetachedProcess(const QString &command,
                               const QString &workingDirectory = QString(),
                               qint64 *pid = nullptr) const;