RFR: 8376234: Migrate java/lang/constant tests away from TestNG [v2]

[Chen Liang]

> Convert all TestNG tests in java/lang/constant to JUnit tests.

Chen Liang 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 four additional commits since the last revision:

 - Reviews
 - Merge branch 'master' of https://github.com/openjdk/jdk into test/constant-no-testng
 - Bugs in migration
 - No testng in constant

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Changes:
  - all: https://git.openjdk.org/jdk/pull/29396/files
  - new: https://git.openjdk.org/jdk/pull/29396/files/0fd824da..aa4d0df5

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29396&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29396&range=00-01

  Stats: 562922 lines in 1947 files changed: 283390 ins; 260516 del; 19016 mod
  Patch: https://git.openjdk.org/jdk/pull/29396.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29396/head:pull/29396

PR: https://git.openjdk.org/jdk/pull/29396