Closes gh-14891

Change the `RemoteApplicationLauncher` to use a random port and also
protect against an NPE if the launch fails.

* gh-14886:
  Polish "Handle StepRegistry connect/read timeout deprecation"
  Handle StepRegistry connect/read timeout deprecation

Closes gh-14886

See gh-14886

Closes gh-14733

Closes gh-14892

Closes gh-14889

Closes gh-14914

This commit changes the requested endpoint for the Jest
HealthIndicator. The `"/_all/_stats"` was previously used, but
the response size can be quite large and costly.

This is now using the `"/_cluster/health"` endpoint.

Closes gh-14854

Closes gh-14882
See gh-14699
See gh-13377

Closes gh-15005

Closes gh-14888

Closes gh-15004

* gh-14807:
  Polish "Add Log Output when DevTools restart is disabled"
  Add Log Output when DevTools restart is disabled

Closes gh-14807

This covers the cases when:
  * An Java agent based reloader (e.g. JRebel) is being used
  * The reloader was disabled by using a system property

See gh-14807

* gh-14934:
  Polish "Make auto-configured applicationTaskExecutor bean lazy"
  Make auto-configured applicationTaskExecutor bean lazy

Closes gh-14934

See gh-14934

* gh-14975:
  Use MeterRegistry.isClosed() for tests

Closes gh-14975

Closes gh-14887

* gh-14907:
  Polish "Add CachingMetadataReaderFactoryPostProcessor earlier in context lifecyle"
  Add CachingMetadataReaderFactoryPostProcessor earlier in context lifecyle

See gh-14907

An initializer that adds a BeanDefinitionRegistryPostProcessor which
in turn adds bean definitions has to be very careful to run early.
Otherwise, other initializers that want to influence the bean
definitions added never get a chance.

Closes gh-14907

Closes gh-14994

Closes gh-15001

Closes gh-15000

Closes gh-14999