RFR: 8311530: Deprecate jdk.jsobject module for removal [v2]

[Kevin Rushforth]

> Deprecate the `jdk.jsobject` module for removal from the JDK, and ship it with JavaFX instead.
> 
> See [JDK-8337280](https://bugs.openjdk.org/browse/JDK-8337280) / PR openjdk/jfx#1529 for the JavaFX PR that will include the module with JavaFX. That PR describes the needed test scenarios.
> 
> This PR does two things:
> 
> 1. Deprecates the `jdk.jsobject` module for removal; the javadoc indicates that the module will be delivered with JavaFX
> 2. Makes `jdk.jsobject` an upgradeable module, which will facilitate the transition by allowing the version of the module shipped with JavaFX to be used in favor of the deprecated module in the JDK itself.

Kevin Rushforth has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains eight additional commits since the last revision:

 - Merge branch 'master' into 8311530-depr-jsobject
 - Merge branch 'master' into 8311530-depr-jsobject
 - Merge branch 'master' into 8311530-depr-jsobject
 - Update javadoc
 - Update copyright years
 - Merge branch 'master' into 8311530-depr-jsobject
 - Add jdk.jsobject to list of UPGRADEABLE_MODULES in UpgradeableModules test
 - 8311530: Deprecate jdk.jsobject module for removal

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/20555/files
  - new: https://git.openjdk.org/jdk/pull/20555/files/c3ee6ad3..d2ff851c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20555&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20555&range=00-01

  Stats: 168234 lines in 1172 files changed: 155508 ins; 7077 del; 5649 mod
  Patch: https://git.openjdk.org/jdk/pull/20555.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20555/head:pull/20555

PR: https://git.openjdk.org/jdk/pull/20555