With the modern location for the Ship It action (in the Review menu),

it's much harder to accidentally post a Ship It review. This makes the

confirmation prompt less important than it once was.
We now have a setting for controlling whether to prompt for

confirmation. This is managed in My Account -> Settings.
The confirmation dialog itself now uses an Ink modal dialog, with some

additional text to help guide users. It also includes a "Do not ask

again" checkbox, which will turn off the confirmation setting as well.

This is a sort of prototype for a suppression dialog that we may want in

Ink.
The setting is managed through the User Session resource, which now

accepts a HTTP PUT with a settings:json JSON Merge Patch of settings.

RB.UserSession provides an endpoint for this as well. These currently

only accept this new confirm_ship_it setting, and they're marked as

for internal use only, but it provides a path for more dynamic settings

down the road.

Python and JavaScript unit tests passed.
Tested the Ship It flow with confirmation turned on and off.
Tested the "Do not ask again" checkbox in the confirmation dialog,

verifying that it turned off the confirmation setting.