Add id_ne filter for integrations (internal API) (#4032)

# What this PR does

Adds a new multiple choice `id_ne` (ID not equal) filter to internal API
integrations endpoint.

## Which issue(s) this PR closes

Related to https://github.com/grafana/oncall-private/issues/2540

## Checklist

- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
    show up in the autogenerated release notes.

engine/apps/api/tests/test_alert_receive_channel.py

@@ -57,6 +57,37 @@ def test_get_alert_receive_channel_by_integration_ne(
         assert result["integration"] != AlertReceiveChannel.INTEGRATION_DIRECT_PAGING
 
 
+@pytest.mark.django_db
+def test_get_alert_receive_channel_by_id_ne(
+    make_organization_and_user_with_plugin_token, make_organization, make_user_auth_headers, make_alert_receive_channel
+):
+    organization, user, token = make_organization_and_user_with_plugin_token()
+
+    alert_receive_channel_1 = make_alert_receive_channel(organization)
+    alert_receive_channel_2 = make_alert_receive_channel(organization)
+    alert_receive_channel_3 = make_alert_receive_channel(organization)
+
+    # integration in a different org
+    organization = make_organization()
+    alert_receive_channel_4 = make_alert_receive_channel(organization)
+
+    client = APIClient()
+    url = (
+        reverse("api-internal:alert_receive_channel-list")
+        + f"?id_ne={alert_receive_channel_1.public_primary_key}&id_ne={alert_receive_channel_2.public_primary_key}"
+    )
+    response = client.get(url, **make_user_auth_headers(user, token))
+
+    assert response.status_code == status.HTTP_200_OK
+    assert len(response.json()["results"]) == 1
+    assert response.json()["results"][0]["id"] == alert_receive_channel_3.public_primary_key
+
+    # integration in a different org shouldn't work
+    url = reverse("api-internal:alert_receive_channel-list") + f"?id_ne={alert_receive_channel_4.public_primary_key}"
+    response = client.get(url, **make_user_auth_headers(user, token))
+    assert response.status_code == status.HTTP_400_BAD_REQUEST
+
+
 @pytest.mark.django_db
 @pytest.mark.parametrize(
     "query_param,should_be_unpaginated",

engine/apps/api/views/alert_receive_channel.py

@@ -68,6 +68,12 @@ class AlertReceiveChannelFilter(ByTeamModelFieldFilterMixin, filters.FilterSet):
         choices=AlertReceiveChannel.INTEGRATION_CHOICES, field_name="integration", exclude=True
     )
     team = TeamModelMultipleChoiceFilter()
+    id_ne = filters.ModelMultipleChoiceFilter(
+        queryset=lambda request: request.auth.organization.alert_receive_channels.all(),
+        field_name="public_primary_key",
+        to_field_name="public_primary_key",
+        exclude=True,
+    )
 
     class Meta:
         model = AlertReceiveChannel