fix: allow messages of just dots (#6330)

src/providers/twitch/TwitchChannel.cpp

@@ -66,7 +66,8 @@ namespace detail {
 bool isUnknownCommand(const QString &text)
 {
     static QRegularExpression isUnknownCommand(
-        R"(^(?:\.|\/)(?!me\s|\s))", QRegularExpression::CaseInsensitiveOption);
+        R"(^(?:\.(?!\.|$)|\/)(?!me(?:\s|$)|\s))",
+        QRegularExpression::CaseInsensitiveOption);
 
     auto match = isUnknownCommand.match(text);