feat(api): Publish typed issue view creation endpoint

[cvxluo]

Publish the issue view creation endpoint. Redux of #122537
Cover it in the agent-token public API matrix with the required feature flag and payload.

Refs IS-15

[linear-code]

IS-15

[wedamija]

This reminded me that I never merged #122950, just merged it now. Could you rebase on this so we can verify that this won't break master?

[sentry]

Bug: The POST request in test_post() is missing content_type="application/json", causing the test client to send data as multipart/form-data, which fails to serialize nested objects and empty lists.
_{Severity: LOW}

Suggested Fix

Add content_type="application/json" to the self.client.post() call to ensure the payload is correctly serialized as JSON. For example: self.client.post(self.url, data, content_type="application/json").

Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI
agent. Verify if this is a real issue. If it is, propose a fix; if not, explain why it's
not valid.

Location: tests/apidocs/endpoints/events/test_organization_issue_views.py#L23

Potential issue: The test `test_post()` sends a POST request with a payload containing a
nested dictionary (`timeFilters`) and empty lists. Because
`content_type="application/json"` is not specified, the Django test client defaults to
`multipart/form-data`. This encoding does not correctly serialize the nested data
structures. The backend's `GroupSearchViewPostValidator` serializer will fail to
validate the malformed data, returning a 400 status code. This causes the test to fail
on the `self.validate_schema` call, which asserts that the response status code must be
in the 2xx range.