fix: no hover on mobile

src/components/view/Course.jsx

@@ -21,8 +21,10 @@ export const Course = ({ events, selection, setSelection, hideOtherCourses }) =>
     useEffect(() => {
         if (element.current) {
             const l = e => {
+                const isMobile = window.matchMedia('(pointer: coarse)').matches
+
                 const $course = e.target.closest('.course')
-                if ($course) {
+                if ($course && !isMobile) {
                     setCurrentlyHovered($course.dataset.courseId)
                 } else {
                     setCurrentlyHovered(null)