Closes gh-24023

Closes gh-23996

Closes gh-23972

Prior to this commit, the schemaZip Gradle task failed to find Spring
schema files on MS Windows due to path separators hard coded to forward
slashes that are not compatible with the Windows operating system.

Consequently, a full build failed on Windows since the distZip task was
not able to locate the zipped schema archive that the schemaZip task
failed to create.

This commit fixes this by updating the schemaZip task to search for
schema files using backslashes as well as forward slashes.

Closes gh-23933

See gh-23747

Closes gh-23569

Closes gh-23593

See gh-23346

Closes gh-23349

Closes gh-23346

Closes gh-23352

Closes gh-23352

Prior to this commit, there was some ambiguity surrounding semantics
for @Autowired constructors and `required = true`, especially for
multiple @Autowired constructors.

This commit improves the documentation in the Javadoc for @Autowired as
well as in the reference manual.

Closes gh-23263

Prior to this commit, if the user configured an empty path for the
targetRequestPath property of a FlashMap, the FlashMapManager threw a
StringIndexOutOfBoundsException when saving the output FlashMap for the
next request.

This commit fixes this by skipping the decoding and normalization of an
empty target request path.

Fixes gh-23240

Closes gh-23172

Prior to this commit, ScriptUtils did not properly split SQL
scripts that contained line endings for MS Windows.

Closes gh-23019

Closes gh-22983

Closes gh-22960

Closes gh-22955

Closes gh-22912

Backport of gh-22903
Closes gh-22904