drupal-* - Use 'civicrm_install_transitional'

[totten]

In #735, the build scripts for drupal-clean and drupal-demo switched:

• From: civicrm_install (ie setup.sh)
• To: civicrm_install_cv (ie cv core:install)

I drafted this as a possible work-around for the failures in 5.51 on https://test.civicrm.org/job/CiviCRM-Civix-Matrix/ -- but still checking to see if it actually helps.

(The PR also goes a bit further, and extends the use of civicrm_install_cv to a few more build-types.)

[totten]

Erg. So apparently the failure that I'm looking at is specific to 5.51 and extension-testing.

• It doesn't involve the installer per se (switching among civicrm_install / civicrm_install_cv / civicrm_install_transitional doesn't help).
• It presents as a fatal error involving SearchSegment and SpecGatherer.
• It affects both CiviCRM-Core-Matrix (phpunit-core-exts, example) and CiviCRM-Civix-Matrix (example).
• When you switch to any other version (5.45, 5.50, 5.52, etc), those same test-suites run fine.

[totten]

OK, the SearchSegment problem was specifically fixed in 5.52 (civicrm/civicrm-core#23991). I've added a backport for 5.51-esr and hacked CiviCRM-Civix-Matrix to include the backport (which appears to be working).

[totten]

This ultimately wasn't needed to fix CiviCRM-Civix-Matrix, but I think it's better to include it (e.g. switches a few more configurations; e.g. more accurate representation of how builds worked for older versions; e.g. better model for subsequent updates to backdrop-* configurations).