Major version dependent tests mean lots of work to get a new major branch started

Problem/Motivation

Some tests are very major version dependent - we should work out if that is necessary and if so can we code around it in some way.

See Drupal\Tests\system\Functional\Update\UpdatePathTestBaseFilledTest::testUpdateHookN for example

Proposed resolution

Some .info.yml files have
core_version_requirement: ^9 we could replace some of this with core_version_requirement: '*'

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet