fix: fixed config for Python and Java grpc lib

PiperOrigin-RevId: 348952930

google/cloud/dialogflow/cx/v3beta1/BUILD.bazel

@@ -88,6 +88,7 @@ java_grpc_library(
 java_gapic_library(
     name = "cx_java_gapic",
     srcs = [":cx_proto_with_info"],
+    gapic_yaml = "dialogflow_gapic.yaml",
     grpc_service_config = "dialogflow_grpc_service_config.json",
     package = "google.cloud.dialogflow.cx.v3beta1",
     test_deps = [
@@ -199,6 +200,10 @@ py_gapic_library(
     name = "cx_py_gapic",
     srcs = [":cx_proto"],
     grpc_service_config = "dialogflow_grpc_service_config.json",
+    opt_args = [
+        "python-gapic-namespace=google.cloud",
+        "python-gapic-name=dialogflowcx",
+    ],
 )
 
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