fix: add deployment_target to conditional config for adk_live service.tf exclusion (#725)

The conditional logic to exclude service.tf files for adk_live + agent_engine
was failing because the deployment_target key was missing from the
conditional_config dict. This caused Terraform to create source-based agent
engines while deploy.py tried to update them with pickle-based deployment,
resulting in API errors.

Author: eliasecchig

agent_starter_pack/cli/utils/template.py

@@ -1630,6 +1630,7 @@ def get_agent_directory(
             # Apply conditional file logic (Windows-compatible replacement for Jinja2 filenames)
             conditional_config = {
                 "agent_name": agent_name,
+                "deployment_target": deployment_target,
                 "cicd_runner": cicd_runner or "google_cloud_build",
                 "is_adk": "adk" in tags,
                 "is_adk_live": "adk_live" in tags,