SearchChats doesn't search by non-alphabetical symbols

[vkryl]

Example.

There's a group with chat.title = "# My Group" or chat.title = "// Some Channel".
SearchChats will not return such results when query = "#" or query = "//".

SearchChatsOnServer will return these chats later, however, this enhancement would allow displaying such results faster.

[levlam]

I'm pretty sure that server search also ignores non-alphanumeric characters. The only difference is that local search returns empty list for effectively empty query and server search returns all chats in that case. It looks like server search should be fixed.

[levlam]

Server search returns empty list for these requests now, so the behavior of SearchChats and SearchChatsOnServer is the same now. There are no plans to search chats by non-alphabetical symbols, so I'm closing this issue.