Revert the recent updates to nested jar support that were intended
to allow verification of signed unpacked nested jars on Oracle JDK.

Unfortunately the changes caused a number of regressions which
affected a larger number of users than those that have issues with
signed jars.

Closes gh-31853

This reverts commit b42f056d.

This reverts commit 360eb027.

Closes gh-32102

Closes gh-31904

* pr/31997:
  Polish "Explicit error message if source is not an archive"
  Explicit error message if source is not an archive

Closes gh-31997

See gh-31997

This commit split the existing assertion to provide an explicit error
message if the source file is not an archive.

See gh-31997

Closes gh-32087

Closes gh-32039

Update `JarFile` so that the `close()` method no longer closes nested
jars or the wrapper. Prior to this commit it was possible for a parent
jar file to be garbage collected and closed even though references still
existed to the nested jars. When this happened the nested jars would get
closed and any access to entries would result in `JarFile.ensureOpen()`
throwing an `IllegalStateException`. The user would often not see this
exception directly, but rather find `ClassNotFoundException` being
thrown.

Fixes gh-31853

Closes gh-32063

Closes gh-32058

Closes gh-32055

Closes gh-32037

Closes gh-29171

See gh-32039

See gh-32037

Closes gh-32008

Update BasicJsonParser to fix the deeply nested map protection logic.

Fixes gh-32029

* pr/32004:
  Polish contribution
  Document the DefaultServlet is no longer being enabled by default

Closes gh-32004

See gh-32004

See gh-32004

See gh-31137

Closes gh-32012

Closes gh-32011

Closes gh-32010

Closes gh-32009

Closes gh-32007

See gh-28208

Closes gh-31137

Closes gh-28208

Closes gh-31983

Closes gh-31979

Closes gh-31103

Closes gh-25855

Closes gh-31916