Closes gh-27048

Closes gh-26820

Closes gh-27045

Closes gh-27044

Closes gh-27015

Closes gh-27014

Closes gh-26971

Closes gh-26964

Closes gh-27039

Closes gh-27038

Closes gh-27037

Closes gh-27036

Closes gh-27035

Closes gh-27034

Closes gh-27033

Closes gh-27032

Closes gh-27031

Closes gh-26970

Closes gh-26969

Closes gh-26963

Closes gh-27013

Closes gh-26968

Closes gh-26962

Closes gh-27024

* gh-26937:
  Polish "Update docs to use @SpringBootConfiguration not @Configuration"
  Update docs to use @SpringBootConfiguration not @Configuration

Closes gh-26937

See gh-26937

See gh-26937

Previously, Log4j2's own shutdown hook was only disabled when Log4j2
detected javax.servlet.Servlet on the classpath and, therefore,
determined that it was running in a web application. In an application
without Servlet on the classpath, this could lead to both Log4j2's shut
down hook and and logging system's shutdown handler both stopping
Log4j2. This could result in a failure as the second attempt at stopping
would result in reinitialization which would fail as the JVM is already
shutting down.

This commit introduces a new Log4j2 PropertySource implementation,
registered via META-INF/services, that sets the
log4j.shutdownHookEnabled property to false. This will ensure that
Log4j2's own shutdown hook is disabled by default whenever Spring Boot
is on the classpath and not just in Servlet-based web applications.

Fixes gh-26953

See gh-27015

See gh-27014

See gh-27013

* pr/26954:
  Avoid illegal reflective access in RabbitAutoConfigurationTests

Closes gh-26954

See gh-26954

Closes gh-27010