Fix mentions rule test

lib/structs/pushrules.cpp

@@ -91,7 +91,6 @@ to_json(nlohmann::json &obj, const PushRule &rule)
         if (!rule.pattern.empty())
                 obj["pattern"] = rule.pattern;
 
-        obj["conditions"] = nlohmann::json::array();
         for (const auto condition : rule.conditions)
                 obj["conditions"].push_back(condition);
 }

tests/pushrules.cpp

@@ -439,7 +439,7 @@ TEST(Pushrules, RoomRuleMentions)
                             rule.actions = {mtx::pushrules::actions::dont_notify{}};
 
                             client->put_pushrules("global",
-                                                  "override",
+                                                  "room",
                                                   res.room_id.to_string(),
                                                   rule,
                                                   [](mtx::http::RequestErr &err) {