Django custom 404 transaction do not have a transaction source

[antonpirker]

How do you use Sentry?

Sentry Saas (sentry.io)

Version

1.35.0

Steps to Reproduce

If you look at the code here we are setting the transaction, but not the transaction source:

sentry-python/sentry_sdk/integrations/django/__init__.py

Lines 396 to 401 in 63e2f77

	if isinstance(handler, string_types):
	scope.transaction = handler
	else:
	scope.transaction = transaction_from_function(
	getattr(handler, "view_class", handler)
	)

Add the transaction with something like this:
https://github.com/getsentry/sentry-python/pull/2519/files