Closes gh-25909

Closes gh-25911

Closes gh-25908

Closes gh-25906

Closes gh-25902

This commit removes `org.springframework.data.annotation.Persistent`
from the annotation types used for MongoDB entity scanning to align
with Spring Data MongoDB.

Fixes gh-25797

Closes gh-26029

This commit harmonizes our auto-configuration so that default converters
are configured the same way ElasticsearchConfigurationSupport does.

Closes gh-25087

Closes gh-26024

Closes gh-25843

Closes gh-26020

Closes gh-26019

Closes gh-26018

Closes gh-26017

Closes gh-26016

Closes gh-26015

Closes gh-26014

Closes gh-26013

Closes gh-26012

Closes gh-26011

Closes gh-26010

Closes gh-26009

Closes gh-26008

Closes gh-26007

Closes gh-26006

Closes gh-25992

Fixes gh-21478

Closes gh-25990

Closes gh-25949

See gh-25987

Closes gh-25948

Closes gh-25987

Fixes gh-25948

See gh-25982

Closes gh-25984

* gh-25951:
  Upgrade to Gradle Enterprise Gradle Plugin 3.6.1

Closes gh-25951

See gh-25951

Closes gh-25982

Previously, several tests in FileSystemWatcherTests assumed that all
of the changes detected by the watcher would be grouped into a single
change set. This assumption breaks down when a test runs slowly (due
to CPU or IO contention, for example), and making changes to the file
system takes long then the watcher's polling interval. When this
happens, the changes will be split across two (or more).

This commit attempts to make the tests more robust. The tests now
tolerate multiple changes sets by combining them and asserting that
across the n change sets, only the expected changes were detected.

Closes gh-25901