MM-11725: Add specific autocomplete endpoint for search autocomplete (#9337)

store/store.go

@@ -162,6 +162,7 @@ type ChannelStore interface {
 	AnalyticsTypeCount(teamId string, channelType string) StoreChannel
 	GetMembersForUser(teamId string, userId string) StoreChannel
 	AutocompleteInTeam(teamId string, term string, includeDeleted bool) StoreChannel
+	AutocompleteInTeamForSearch(teamId string, userId string, term string, includeDeleted bool) StoreChannel
 	SearchInTeam(teamId string, term string, includeDeleted bool) StoreChannel
 	SearchMore(userId string, teamId string, term string) StoreChannel
 	GetMembersByIds(channelId string, userIds []string) StoreChannel