Closes #17756

[Godfrey Chan, Zachary Scott]

This removes the unwanted deprecation warnings in the tests

This is a follow-up to 116de073. That change was for two reasons: 1) speed up the
tests by reducing the amount of log lines 2) avoid a deprecation warning from
a6de6f50.

This setting need to be on the basic app too, otherwise the deprecation warning
will show up on other unrelated test cases.

Fix out of range error message

Always default the log_level to :info for Railties

Add a CHANGELOG entry for #16622 and a6de6f50 [ci skip]

Add release note for #17743 [ci skip]

Refs #17684: Enhances rdoc for ActiveJob assert_performed assertions

It will set proper queue_adapter state required by assert_performed_jobs assertions.

Also the block version of assert_performed_jobs will make sure this
state is respected.

Fixes #17684

Fixes https://github.com/rails/rails/issues/16958

[Byron Bischoff & Melanie Gilman]

Follow up to #17646.

Creating mailer layouts by default, including html and body tags

This allows us so abstract the migration from the type that is actually
used by Rails.  For example, ":string" may be a varchar or something,
but the framework does that translation, and the app shouldn't need to
know.

Explain that default_scope also influences update_all

Use sprockets-rails 2.2.x on base app and allow greater version

- Remove sprockets-rails from generated Gemfile as rails has a hard-dependency on it

- Also allow sprockets-rails >= 2.0.0

It should be part of the documented public API, since we have an entire
section of the guides dedicated to it. Documented in a way that
addresses the concerns which kept it undocumented in the past.

Show source view and backtrace on missing template errors

This will help you debug missing template errors, especially if they
come from a programmatic template selection. Thanks to @dhh for
suggesting that.

As a bonus, also show request and response info on the routing error
page for consistency.