[jfx25u] RFR: 8361644: Update ICU4C to 77.1

[Hima Bindu Meda]

Clean Backport

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Commit messages:
 - Backport c8cfc89df018abcba9468e6e91ea7ded00f061e7

Changes: https://git.openjdk.org/jfx25u/pull/14/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx25u&pr=14&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8361644
  Stats: 71204 lines in 604 files changed: 48299 ins; 7306 del; 15599 mod
  Patch: https://git.openjdk.org/jfx25u/pull/14.diff
  Fetch: git fetch https://git.openjdk.org/jfx25u.git pull/14/head:pull/14

PR: https://git.openjdk.org/jfx25u/pull/14