Closes gh-22416

Closes gh-22491

Closes gh-22409

* pr/22482:
  Polish

Closes gh-22482

Closes gh-22473

Closes gh-22468

Closes gh-22449

Closes gh-22444

Closes gh-22426

Closes gh-22435

Prior to this commit, the negotiated content-type during the request
mapping phase would be kept as the response content-type header; this
information is used when rendering the error response and prevents a new
round of content negotiation to choose the media type that fits best.

This commit removes the response content type information at the
beginning of the error handling phase.

Fixes gh-22452

Closes gh-22412

Closes gh-22419

Closes gh-22410

* pr/22385:
  Polish "Ensure indexer gracefully handle missing meta annotations"
  Ensure indexer gracefully handle missing meta annotations

Closes gh-22385

See gh-22385

Closes gh-22405

This class is only known to be used in spring-data-jdbc-ext project
which was never upgraded to Spring Framework 5.x and is no longer
actively developed.

Closes gh-11647

Closes gh-22400

Closes gh-2070