* Closes: #18588: Relabel Service model to Application Service
Updates the `verbose_name` of the `Service` and `ServiceTemplate` models to "Application Service" and
"Application Service Template" respectively. This serves as the foundational change for relabeling
the model throughout the user interface to reduce ambiguity.
To preserve backward compatibility for the REST and GraphQL APIs, the test suites have been updated
to assert the stability of the original field and parameter names. This includes:
* Using `filter_name_map` in the filterset test case to ensure API query parameters remain
`service` and `service_id`.
* Employing the GraphQL test suite's aliasing mechanism to ensure the public schema remains
unchanged despite the underlying `verbose_name` modification.
Subsequent commits will address UI-specific labels in navigation, tables, forms, and templates.
* Rename to Application Services/Application Service Templates in nav menu
* Rename ~service to ~'Application Service' in templates
This was done for both the Service model and Service Template model
appearances in templates where the word was hardcoded.
* Change ~service to ~'application service' hardcoded strings in Python files
* Update ~service to ~'application service' in docs
