Fixes gh-11273

Extract properties used by RestDocs to their own class.

See gh-10696

This commit makes sure that properties-based resource bundle location
with a dot is detected. It also harmonizes the description of the
configuration key as our support is not stricly matching the convention.

Closes gh-10092

* gh-10969:
  Polish "Add auto-configuration for using REST Docs with WebTestClient"
  Add auto-configuration for using REST Docs with WebTestClient

Closes gh-10696

See gh-10969

Closes gh-11579

It's a new module in 3.0 and we're using 2.53.x in 1.5.x.

See gh-11528

Closes gh-11578

Closes gh-11576

* pr/11534:
  Use instance equality for Class

Closes gh-11534

* pr/11536:
  Polish

Closes gh-11536

* pr/11498:
  Polish GSON customization support
  Allow GSON customization via properties or beans

Closes gh-11498

Update GSON support to allow customization with either properties or
customize beans.

See gh-11498

Extract functionality from the `RegistrationBean` into a new class
designed to work with dynamic registration. Servet and Filter
registration beans now extend from `DynaimcRegistrationBean`, where as
`ServletListenerRegistrationBean` extends directly from
`RegistrationBean`.

This refactor allows the removal of `ServletListenerRegistrationBean`
deprecated methods.

Fixes gh-11344

Fix NPE accidentally introduced during refinement.

This reverts commit 2c52b9e8
since the SNAPSHOT BOM doesn't appear to be published.

See gh-11573

See gh-11573

Update `WebMvcMetricsFilter` so that it no longer causes early
initialization of Spring MVC concerns.

Fixes gh-11571

Update `BackgroundPreinitializer` to start initialization earlier. Also
refine the startup order and initialize Charsets.

Fixes gh-11570
See gh-11412

Align `MapBinder` with `IndexedBinder` so that if a value is specified
any converter exception are propagated.

See gh-11493

Remove unused code and polish implementation so that the binder is not
created on each invocation.

See gh-10516