<i18n dev> RFR: JDK-8320714: java/util/Locale/LocaleProvidersRun.java and java/util/ResourceBundle/modules/visibility/VisibilityTest.java timeout after passing [v2]

[Justin Lu]

> Please review this PR which fixes timeouts for the two tests: _java/util/Locale/LocaleProvidersRun.java_ and _java/util/ResourceBundle/modules/visibility/VisibilityTest.java_.
> 
> These tests were updated to accept VM flags in [JDK-8319569](https://bugs.openjdk.org/browse/JDK-8319569), which is now causing timeouts in tiers 6 and 8. One set of VM flags causes _VisibilityTest.java_ to timeout with a duration of over 2 hours in tier6.
> 
> Both have been updated to run without VM flags and marked as `vm.flagless`.

Justin Lu has updated the pull request incrementally with one additional commit since the last revision:

  clarify comments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/16831/files
  - new: https://git.openjdk.org/jdk/pull/16831/files/f58cb4b5..5ecf4285

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16831&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16831&range=00-01

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/16831.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16831/head:pull/16831

PR: https://git.openjdk.org/jdk/pull/16831