Set MAX_ACTIVE_ENCOUNTERS_PER_PATIENT_IN_FACILITY default to 1

[Copilot]

New environments need MAX_ACTIVE_ENCOUNTERS_PER_PATIENT_IN_FACILITY baked into the backend ConfigMap by default, while remaining overridable per environment.

Changes

• deploy/locals.tf: added MAX_ACTIVE_ENCOUNTERS_PER_PATIENT_IN_FACILITY = "1" to the first map in local.config_map_data's merge(...). Because var.additional_config_map_data is the second argument to merge, env-specific tfvars still win.

Overriding per environment

additional_config_map_data = {
  MAX_ACTIVE_ENCOUNTERS_PER_PATIENT_IN_FACILITY = "5"
}