RFR: 8320918: Fix errors in the built-in Catalog implementation [v2]

[Joe Wang]

> Fix errors in the built-in Catalog implementation, specifically:
>     -- incorrect case in the property name as defined in the CSR (https://bugs.openjdk.org/browse/JDK-8306056)
>     -- tests needed to be updated accordingly
>     -- jaxp.properties updated with documentation for the new properties
>     
> Tests: passed after the update.

Joe Wang has updated the pull request incrementally with one additional commit since the last revision:

  fix typo in the comments

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/16862/files
  - new: https://git.openjdk.org/jdk/pull/16862/files/e3908863..af0c7438

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16862&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16862&range=00-01

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/16862.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16862/head:pull/16862

PR: https://git.openjdk.org/jdk/pull/16862