Cleanup loaded features and constants after dependency tests.
copy reflection_scopes’s unscoped value when building scope for preloading, fixes #11036
[ci skip] Add missing blank line to AR validation.
[ci skip] No need to indent here (AC overview).
[ci skip] Add highlight to code (form helper guide).
Make `String#remove` and `String#remove!` accept multiple arguments
added punctuations, and role of queue_adapter module [ci skip]
Remove redundant substitute index when constructing bind values

We end up re-ordering them either way when we construct the Arel AST (in order
to deal with rewhere, etc), so we shouldn't bother giving it a number in the
first place beforehand.
placed description at correct place [ci skip]
- Remove unused duplicated method `add_column_position` from AbstractMysqlAdapter
development.rb should mention available log levels
Tiny documentation fixes and styling improvements

[ci skip]
Remove redundant require of file

This file was required inside 'test/validators/namespace/email_validator.rb'
that's already required here. Therefore I removed the redundant required.
Don't needlessly alphabetize columns for insert/update

This slightly simplifies the code, and reduces the number of times we
need to iterate over the attributes by one.
Revert "development.rb should mention available log levels"

This reverts commit 102ba5fd69f18c7d58d70247090fbdeadfc53ca1.

Reason: code/template changes cannot be made in docrails
Merge pull request #17477 from Adam89/ma-remove-redundant-require

Remove redundant require of file
Merge pull request #17463 from mrgilman/remove-index-from-substitute-at

Remove redundant substitute index when constructing bind values
Use bind values for joined tables in where statements

In practical terms, this allows serialized columns and tz aware columns
to be used in wheres that go through joins, where they previously would
not behave correctly. Internally, this removes 1/3 of the cases where we
rely on Arel to perform type casting for us.

There were two non-obvious changes required for this. `update_all` on
relation was merging its bind values with arel's in the wrong order.
Additionally, through associations were assuming there would be no bind
parameters in the preloader (presumably because the where would always
be part of a join)

[Melanie Gilman & Sean Griffin]
Fix test which failed in isolation

It was transitively relying on the vertex model being loaded
[ci skip] `Relation#bind` is not public API