Enable PreparedDDL by default. (#2293)

Author: spuchin

ydb/core/protos/table_service_config.proto

@@ -234,7 +234,7 @@ message TTableServiceConfig {
     optional bool EnablePredicateExtractForDataQueries = 37 [default = true];
     optional bool EnableKqpImmediateEffects = 38 [default = true];
     optional bool EnableSequentialReads = 39 [default = true];
-    optional bool EnablePreparedDdl = 42 [default = false];
+    optional bool EnablePreparedDdl = 42 [default = true];
     optional bool EnableSequences = 43 [default = true];
     optional bool EnableAsyncComputationPatternCompilation = 48 [default = true];
     optional TCompileComputationPatternServiceConfig CompileComputationPatternServiceConfig = 47;