The frontend called checkMajoorVersion() unconditionally on startup,
and the backend /mjr/am/releases endpoint made outbound requests to
api.github.com to power it. This violates the no-internet-requests
policy for core ComfyUI code, even for update checks framed as
diagnostic or opt-out. Removes the endpoint, the frontend check, the
now-dead version-update badge dot in HeaderSection.vue, and associated
tests/docs.
Ewald
990071069f