fix(settings): propagate inner json/handler errors to outer catch

Earlier fix added .catch() handlers to both fetch chains, but the
outer .then body called response.json().then(...) without returning
the inner promise. That meant rejections from response.json() (e.g.
non-JSON response) or from the inner handler body (e.g. a throw in
isEqualsJson or data access) floated unhandled.

Return the inner promise so its rejection reaches the outer .catch.
Also short-circuit early on !response.ok to keep the happy path at
the top indentation level.

Verified via a standalone promise-graph reproducer: all seven paths
(outer fetch reject, non-ok response, json reject, handler throw,
push fetch reject, push handler throw, happy path) are caught by
their intended handler.

0 files changed, 0 insertions, 0 deletions