fix: add telemetry enablement env for agent engines deployed using module

This is to fix telemetry enablement in `adk deploy` CLI.

FUTURE_COPYBARA_INTEGRATE_REVIEW=#6093 from googleapis:release-please--branches--main cb969c2
PiperOrigin-RevId: 828955929

Author: vertex-sdk-bot

vertexai/_genai/agent_engines.py

@@ -1024,6 +1024,9 @@ def _create_config(
             update_masks.append("labels")
             config["labels"] = labels
 
+        if agent_framework == "google-adk":
+            env_vars = _agent_engines_utils._add_telemetry_enablement_env(env_vars)
+
         sys_version = f"{sys.version_info.major}.{sys.version_info.minor}"
         agent_engine_spec = None
         if agent is not None: