Modules: replace mock in themes view for real request

[fhaver-amsterdam]

Changes

This PR updates the modules service’s themes endpoint to stop using test/mock payloads and instead fetch live “all services” data from Mijn Amsterdam, while updating settings and tests accordingly.

Changes:

• Replace MOCK_DATA usage in MijnAmsterdamThemesView with a real HTTP request to the Mijn Amsterdam “ALL” endpoint.
• Update tests to mock the outbound HTTP call via responses rather than relying on local mock data.
• Simplify/adjust Mijn Amsterdam settings keys (single MIJN_AMS_ALL_PATH) and extend theme-field mappings.

Affected services

• modules

Definition of done

• API is backwards compatible (make openapi-diff)
• Swagger UI up-to-date & tested (make dev)
  - [ ] Dependencies updated (make requirements)
• Infrastructure config updated (aapp_azure_infra)
• Loadtests for relevant endpoints (aapp_testing_loadtests)

After PR created (and deployed on dev):

• Manual check on dev (o) e.g. use feature via Swagger or admin panel
• Sanity check on test app (check that dev environment is selected)

Other notes

GitHub Copilot was used in writing the code

[Copilot]

Pull request overview

This PR updates the modules service’s themes endpoint to stop using test/mock payloads and instead fetch live “all services” data from Mijn Amsterdam, while updating settings and tests accordingly.

Changes:

• Replace MOCK_DATA usage in MijnAmsterdamThemesView with a real HTTP request to the Mijn Amsterdam “ALL” endpoint.
• Update tests to mock the outbound HTTP call via responses rather than relying on local mock data.
• Simplify/adjust Mijn Amsterdam settings keys (single MIJN_AMS_ALL_PATH) and extend theme-field mappings.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
modules/views/theme_views.py	Switches the themes view from mock payload to a real upstream request; adjusts content filtering and request construction.
modules/tests/views/test_theme_views.py	Updates tests to stub upstream HTTP via responses and validates the upstream call count.
modules/settings/base.py	Replaces MIJN_AMS_API_PATHS usage with MIJN_AMS_ALL_PATH and adds header constants for outbound requests.
modules/constants.py	Extends the theme module → field mapping (adds mams-soil).