fix(participantStore): update the whole participant object

Signed-off-by: Maksim Sukharev <antreesy.web@gmail.com>

src/store/participantsStore.js

@@ -317,7 +317,7 @@ const mutations = {
 
 	updateParticipant(state, { token, attendeeId, updatedData }) {
 		if (state.attendees[token] && state.attendees[token][attendeeId]) {
-			state.attendees[token][attendeeId] = Object.assign(state.attendees[token][attendeeId], updatedData)
+			state.attendees[token][attendeeId] = Object.assign({}, state.attendees[token][attendeeId], updatedData)
 		} else {
 			console.error('Error while updating the participant')
 		}