chore: various backports to 7.2

[BuonOmo]

Cherry-pick #364 for 7-2-stable branch. I took the opportunity to include the backport already made to 7-0-stable branch and all of the backports that are test related so we can enjoy a faster CI here as well.

[rafiss]

nice work!

[rafiss]

It appears there is one test with an issue though:

  1) Error:
ActiveRecord::ConnectionAdapters::ConnectionPoolThreadTest#test_checkout_fairness_by_group:
Timeout::Error: Test took over 5 minutes to finish
    vendor/bundle/ruby/3.4.0/bundler/gems/rails-6cfa24f9dfdd/activerecord/test/cases/connection_pool_test.rb:515:in 'Kernel#sleep'
    vendor/bundle/ruby/3.4.0/bundler/gems/rails-6cfa24f9dfdd/activerecord/test/cases/connection_pool_test.rb:515:in 'block in ActiveRecord::ConnectionAdapters::ConnectionPoolTests#test_checkout_fairness_by_group'
    <internal:kernel>:168:in 'Kernel#loop'
    vendor/bundle/ruby/3.4.0/bundler/gems/rails-6cfa24f9dfdd/activerecord/test/cases/connection_pool_test.rb:514:in 'ActiveRecord::ConnectionAdapters::ConnectionPoolTests#test_checkout_fairness_by_group'

[BuonOmo]

There was also an issue on the company table related test (pretty sure it is just because of tests changing the db state).

I'm investigating on the timeout but I cannot reproduce it locally yet

EDIT: I had one local reproduction of the fairness test, but only with the whole test suite. I also suspect that we leek one checkout connection at some point in the test suite. I'll investigate further, but I believe this is not directly related to 7.2 (I'm running tests on the master branch to confirm)

[BuonOmo]

I have very few reproductions, I suggest merging to avoid this being stale, and I'll run tests on fairness for the master (could we consider call it main? 🙏). WDYT?

I would rebase and merge to keep backport history if you don't mind