Always set CLIENT_MULTI_RESULTS flag in handshake. Fixes #1445

This fixes a regression in b35721f that cleared this flag.

Signed-off-by: Bradley Grainger <bgrainger@gmail.com>

src/MySqlConnector/Protocol/Payloads/HandshakeResponse41Payload.cs

@@ -9,27 +9,26 @@ private static ByteBufferWriter CreateCapabilitiesPayload(ProtocolCapabilities s
 	{
 		var writer = new ByteBufferWriter();
 
-		var clientCapabilities = (ProtocolCapabilities.Protocol41 |
-			(cs.InteractiveSession ? ProtocolCapabilities.Interactive : 0) |
-			ProtocolCapabilities.LongPassword |
-			ProtocolCapabilities.Transactions |
+		var clientCapabilities =
+			ProtocolCapabilities.Protocol41 |
+			(cs.InteractiveSession ? (serverCapabilities & ProtocolCapabilities.Interactive) : 0) |
+			(serverCapabilities & ProtocolCapabilities.LongPassword) |
+			(serverCapabilities & ProtocolCapabilities.Transactions) |
 			ProtocolCapabilities.SecureConnection |
-			ProtocolCapabilities.PluginAuth |
-			ProtocolCapabilities.PluginAuthLengthEncodedClientData |
+			(serverCapabilities & ProtocolCapabilities.PluginAuth) |
+			(serverCapabilities & ProtocolCapabilities.PluginAuthLengthEncodedClientData) |
 			ProtocolCapabilities.MultiStatements |
 			ProtocolCapabilities.MultiResults |
 			(cs.AllowLoadLocalInfile ? ProtocolCapabilities.LocalFiles : 0) |
-			(string.IsNullOrWhiteSpace(cs.Database)
-				? 0
-				: ProtocolCapabilities.ConnectWithDatabase) |
+			(string.IsNullOrWhiteSpace(cs.Database) ? 0 : ProtocolCapabilities.ConnectWithDatabase) |
 			(cs.UseAffectedRows ? 0 : ProtocolCapabilities.FoundRows) |
 			(useCompression ? ProtocolCapabilities.Compress : ProtocolCapabilities.None) |
-			ProtocolCapabilities.ConnectionAttributes |
-			ProtocolCapabilities.SessionTrack |
-			ProtocolCapabilities.DeprecateEof |
-			ProtocolCapabilities.QueryAttributes |
-			ProtocolCapabilities.MariaDbCacheMetadata |
-			additionalCapabilities) & serverCapabilities;
+			(serverCapabilities & ProtocolCapabilities.ConnectionAttributes) |
+			(serverCapabilities & ProtocolCapabilities.SessionTrack) |
+			(serverCapabilities & ProtocolCapabilities.DeprecateEof) |
+			(serverCapabilities & ProtocolCapabilities.QueryAttributes) |
+			(serverCapabilities & ProtocolCapabilities.MariaDbCacheMetadata) |
+			additionalCapabilities;
 
 		writer.Write((int) clientCapabilities);
 		writer.Write(0x4000_0000);