fix(oncall service): return correct message if we encounter an integr…

[mvilanova]

…ity error on delete

[Copilot]

Pull Request Overview

This pull request updates error messages in the oncall service views to provide more descriptive and context-specific feedback when operations fail, particularly focusing on handling integrity errors during deletion.

• Updated error messages to reference "oncall service" instead of a generic "service".
• Reordered imports and updated the imported functions list.

Comments suppressed due to low confidence (1)

src/dispatch/service/views.py:8

• The 'delete' function is used in the delete_service function (line 117) but is no longer imported from .service. Please add 'delete' to the import list to ensure deletion works as expected.

from .service import ( get, get_all_by_external_ids, get_by_external_id_and_project_name, update, )