[jdk21u] RFR: 8333462: Performance regression of new DecimalFormat() when compare to jdk11

[lingjun-cg]

8333462: Performance regression of new DecimalFormat() when compare to jdk11

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Commit messages:
 - Backport d826127970bd2ae8bf4cacc3c55634dc5af307c4

Changes: https://git.openjdk.org/jdk21u/pull/447/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=447&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8333462
  Stats: 8 lines in 1 file changed: 3 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk21u/pull/447.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/447/head:pull/447

PR: https://git.openjdk.org/jdk21u/pull/447