Switching from Backend Traces back to API Traces crashed the page
with "can't access property status, e.response is undefined" (#11376).
The API table briefly renders the previous tab's backend rows while the
refetch effect is still pending, and those rows carry no `response`
envelope. The status column dereferenced it unguarded. Render a neutral
placeholder instead of throwing, and cover the tab-switch scenario with
a regression spec.
Assisted-by: opencode:big-pickle
Signed-off-by: Nandana Dileep <110280757+nandanadileep@users.noreply.github.com>
Nandana Dileep
147a5ee783