RFR: 8374052: Use java/util/Calendar in ReplaceCriticalClasses.java test

[Coleen Phillimore]

This patch replaces Locale with Calendar since Locale can be loaded during the JVMTI PRIMORDIAL phase and not be loaded with the ClassFileLoadHook.  See linked bug for details.  (https://bugs.openjdk.org/browse/JDK-8372686)
Tested with the test on windows.

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Commit messages:
 - 8374052: Use java/util/Calendar in ReplaceCriticalClasses.java test

Changes: https://git.openjdk.org/jdk/pull/28914/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28914&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8374052
  Stats: 5 lines in 1 file changed: 0 ins; 1 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/28914.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28914/head:pull/28914

PR: https://git.openjdk.org/jdk/pull/28914