Add a Clone action to instance template cards. It reuses the create
flow prefilled from the source, dropping the source id and ownership so
the backend assigns a fresh id and scopes the copy to the caller's own
principal. Clone is offered on every visible template — including
admin-curated Global rows a non-admin can otherwise only view — so
users can fork a Global preset into their own organization without
admin involvement.
The prefilled name defaults to a `-clone` suffix (trimmed to the
63-char limit) so cloning within the same scope doesn't collide on the
unique name. Edit/Delete remain gated on ownership; Clone is always
available.
Two changes that together restore the per-row Edit / Delete menu
for non-admin users:
- ``templateActions`` drops the blanket ``access: 'canSeeAdmin'``
gate on every menu item. With the gate on, non-admin callers got
an empty filtered menu, so clicking the "..." did nothing.
- The management page passes ``mine=true`` to the list API. The
endpoint now drops Global rows for non-admin callers (rows they
can't edit anyway), so the dropdown shows up only on rows the
caller may manage. The GPU-instance create picker reuses the
same API without ``mine``, keeping Global presets visible there.
