Filter several service accounts, not just Playerbots

The auction-house bot account (ahouse) owns 9 mule characters that were
showing up in the armory alongside real players. One LIKE pattern could not
cover both it and RNDBOT%.

Replaces botAccountPattern with botAccountPatterns, a comma-separated list
of LIKE patterns, and builds the clause with Utils.botAccountFilter. An empty
list now disables the filter outright rather than emitting a clause that
matches nothing, so misconfiguration fails open instead of hiding everyone.

The stack default becomes "RNDBOT%,ahouse"; config.default.json keeps the
generic "RNDBOT%" so the fork stays upstreamable.

Verified against the live realm: 29 listed before, 20 after. The 9 excluded
are the ahouse mules.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NW2ooBP2KPqQVzdZZDMvZd

config.default.json

@@ -10,7 +10,7 @@
 	"loadDbcs": true,
 	"hideGameMasters": true,
 	"hideBotAccounts": true,
-	"botAccountPattern": "RNDBOT%",
+	"botAccountPatterns": "RNDBOT%",
 	"transmogModule": false,
 	"useZamCdn": false,
 	"realms": [