fix(integrations): update usage of is_enabled data forwarding

[liuirene256]

ECO 1200 and ECO 1269

[codecov]

❌ 2 Tests Failed:

Tests completed	Failed	Passed	Skipped
29884	2	29882	245

View the top 2 failed test(s) by shortest run time

tests.sentry.integrations.api.serializers.rest_framework.test_data_forwarder.DataForwarderSerializerTest::test_required_fields

Stack Traces | 0.977s run time

#x1B[1m#x1B[.../serializers/rest_framework/test_data_forwarder.py#x1B[0m:80: in test_required_fields
    assert not serializer.is_valid()
#x1B[1m#x1B[31mE   AssertionError: assert not True#x1B[0m
#x1B[1m#x1B[31mE    +  where True = <bound method BaseSerializer.is_valid of DataForwarderSerializer(data={'organization_id': 4557141661450240, 'provider'...s 'dict'>)\n    project_ids = ListField(allow_empty=True, child=IntegerField(), default=<class 'list'>, required=False)>()#x1B[0m
#x1B[1m#x1B[31mE    +    where <bound method BaseSerializer.is_valid of DataForwarderSerializer(data={'organization_id': 4557141661450240, 'provider'...s 'dict'>)\n    project_ids = ListField(allow_empty=True, child=IntegerField(), default=<class 'list'>, required=False)> = DataForwarderSerializer(data={'organization_id': 4557141661450240, 'provider': <DataForwarderProviderSlug.SEGMENT: 'se...ss 'dict'>)\n    project_ids = ListField(allow_empty=True, child=IntegerField(), default=<class 'list'>, required=False).is_valid#x1B[0m

tests.sentry.integrations.api.endpoints.test_data_forwarding.DataForwardingIndexPostTest::test_create_without_project_ids

Stack Traces | 1.39s run time

#x1B[1m#x1B[.../api/endpoints/test_data_forwarding.py#x1B[0m:359: in test_create_without_project_ids
    assert data_forwarder.project.count() == 0
#x1B[1m#x1B[31mE   AttributeError: 'DataForwarder' object has no attribute 'project'. Did you mean: 'projects'?#x1B[0m

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[leeandher]

Looks good, may just want a test for the new models to prevent a regression

[cursor]

Bug: Config filter permits whitespace-only credential values

The filter removes empty string values but allows whitespace-only strings like " " to pass through. Since allow_blank=True was added to the config field, values that are only spaces now pass the filter and reach validation without being rejected. This allows invalid credentials (whitespace-only access_key or secret_key) to pass serializer validation and fail later at runtime. The filter should check for stripped-empty values.

 

[cursor]

Bug: Test accesses wrong related_name for data_forwarder

The test accesses data_forwarder.project.count() but the DataForwarderProject model defines the reverse relationship with related_name="projects". This should be data_forwarder.projects.count() to correctly reference the related manager and avoid an AttributeError at runtime.