RFR: 8328821: Map.of() derived view collection mutators should throw UnsupportedOperationException [v14]

[Liam Miller-Cushon]

> This change overrides mutator methods in the implementation returned by `Map.of().entrySet()` to throw `UnsupportedOperationException`.

Liam Miller-Cushon has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 18 commits:

 - Merge commit 'f94644999766e752f7d60ce52c14a7db79005035^' into JDK-8328821-make-clear-consistent
 - Add an implementation comment to AbstractImmutableMap
 - Update for Stable Values
 - Merge remote-tracking branch 'origin/master' into JDK-8328821-make-clear-consistent
 - Merge remote-tracking branch 'origin/master' into JDK-8328821-make-clear-consistent
 - Merge remote-tracking branch 'origin/master' into JDK-8328821-make-clear-consistent
 - Merge remote-tracking branch 'origin/master' into JDK-8328821-make-clear-consistent
 - Update test/jdk/java/util/Collection/MOAT.java
   
   Co-authored-by: Chen Liang <liach at openjdk.org>
 - Update copyright year
   
   and add the bug number to the modified test
 - Update unmodifiable map javadoc
 - ... and 8 more: https://git.openjdk.org/jdk/compare/df5b105b...ab5dab9a

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Changes: https://git.openjdk.org/jdk/pull/18522/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18522&range=13
  Stats: 120 lines in 3 files changed: 114 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/18522.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18522/head:pull/18522

PR: https://git.openjdk.org/jdk/pull/18522