Add option to disable truncation of the book label

The default MR keeps truncation on as part of the post update hook.

Here's a patch that can be applied on top of it that changes the default behaviour to having truncation off by default.

Appears to have a test failure. Will also need a 3.0.x branch

Unsure why 2.0.x MRs are failing, but the failed tests are a separate issue as the tests pass locally.

Can confirm the baseline 2.0.x test failure behaviour with https://git.drupalcode.org/project/book/-/merge_requests/105

smustgrave → closed merge request !101

smustgrave → closed merge request !105

This feels more like a feature request so going to just merge into 3.0.x, also took out the change to the composer file as don't think it's needed for this fix.

Automatically closed - issue fixed for 2 weeks with no activity.