Fix 'set-local-storage-item' — scriptlet does not work on https://search.brave.com/

Hello,
it looks like the scriptlet `set-local-storage-item` does not work on `https://search.brave.com/`.

Tried
`search.brave.com,example.org#%#//scriptlet('set-local-storage-item', 'app.usageMetricsOptOut', 'true')`
and this the result on
`search.brave.com`

`example.org`

Tried also the same scriptlet with uBlock Origin.
This is the result:

Could you take a look, please?

Additional information:
Firefox 120
AG Ext v. 4.2.228