Closes gh-24037

* pr/24089:
  Fix consecutive-word duplications in documentation

Closes gh-24089

See gh-24089

Closes gh-24088

Closes gh-23836

Closes gh-22892

Closes gh-24068

See gh-24075

This commit lowers the level of Throwable handling in parts of
spring-websocket which now handle Exception instead and allow any Error
to propagate.

Closes gh-24075

Closes gh-24027

This commit exposes the method that returns the media type used to write
forms. By default, it includes the charset in the content type, which
can cause issues with certain consumers. This commit changes the method
from a private to a protected method, so that users can override the
default behavior.

Closes: gh-22971

Fix uncommon case in Jackson2SmileDecoder, where a null token,
incicating a document separator in streaming mode, is followed by
NOT_AVAILABLE.

Closes gh-24009

Closes gh-24073

Closes gh-24062

Closes gh-19905

Closes gh-24056

Closes gh-24050

Closes gh-24059

Closes gh-23758

This commit refines Coroutines annotated controller support
by considering Kotlin Unit as Java void and using the right
ReactiveAdapter to support all use cases, including suspending
functions that return Flow (usual when using APIs like WebClient).

It also fixes RSocket fire and forget handling and adds related tests
for that use case.

Closes gh-24057
Closes gh-23866

Before this commit the connector waited for a completed response (via
ServerHttpResponse#setComplete or ServerHttpResponse#writeWith) or an
error signal in handling, but it didn't deal explicitly with the case
where both can occur.

This commit explicitly waits for the completion of handling (success
or error) before passing the response downstream. If an error occurs
after response completion, it is wrapped in a dedicated exception that
also provides access to the completed response.

Close gh-24051

Closes gh-24048

Closes gh-24048

This commit allows single-value async producers for the values of
metadata entries in both the SETUP and for requests. The same is also
enabled for data in the SETUP frame.

Close gh-23640

Closes gh-24042

Closes gh-23342

See gh-24037

Close gh-24030

The test introduced in this commit is intended to serve as a regression
test for the status quo.

See gh-23985

See gh-23999

Closes gh-24029