[Alts] Server-side search controls, IP counts, adjustable window (#7517)

* [Alts] Server-side search controls, IP counts, adjustable window

Plumbs the match-type chips through to the server: include_email/include_clientid/include_ip skip disabled identifier types in both matching and frontier expansion, so excluded types (e.g. throwaway domains) never enter the graph at any depth. Session lookback becomes adjustable (session_months, clamped 1-24, default 6). Each alt row carries ip_count, the distinct recent session IP count shown in a new IPs column. All proto additions are optional with old defaults, so old clients/servers interoperate.

* Fix remaining review threads on the alts search controls

- Disable keyboard tracking on the depth and window spin boxes so typing a
  two-digit value sends one search, not one per digit.
- Reload the user under investigation on a filter change instead of reading
  the search box, which could switch to a name never submitted.
- Keep a chip's last match count while it is unchecked; the server omits
  unchecked match types, so the label used to drop to "(0)".

---------

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

servatrice/src/serversocketinterface.cpp

@@ -2596,7 +2596,9 @@ Response::ResponseCode AbstractServerSocketInterface::cmdGetUserAlts(const Comma
 
     Response_UserAlts *re = new Response_UserAlts;
     const int depth = cmd.has_depth() ? static_cast<int>(cmd.depth()) : 1;
-    const QList<ServerInfo_UserAlt> alts = sqlInterface->getUserAlts(userName, depth);
+    const int sessionMonths = cmd.has_session_months() ? static_cast<int>(cmd.session_months()) : 6;
+    const QList<ServerInfo_UserAlt> alts = sqlInterface->getUserAlts(
+        userName, depth, cmd.include_email(), cmd.include_clientid(), cmd.include_ip(), sessionMonths);
     for (const ServerInfo_UserAlt &alt : alts) {
         re->add_alts()->CopyFrom(alt);
     }