Removes a specified student from a lecture's present list, placing them back into not-yet-present.

socket.on('manualStudentRemove', async (studentId: string, lectureId: number) => {
await handleManualStudentRemove(
socket,
io,
studentId,
lectureId,
notYetPresentStudents,
presentStudents
);
});

When user roles are insufficient or removal fails