RFR: 8346944: Update Unicode Data Files to 17.0.0 [v2]

[Naoto Sato]

> Updates the JDK to use the latest Unicode 17.0.0, which also updates the ICU4J along with it ([8346947](https://bugs.openjdk.org/browse/JDK-8346947)
> Update ICU4J to Version 78.1). The corresponding CSR has already been approved.

Naoto Sato 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 11 additional commits since the last revision:

 - Merge branch 'master' into JDK-8346944-Unicode-17
 - icudata path fix
 - Update versions
 - icu4j final
 - .md file changes
 - 17.0 final
 - icudata78b(binary)
 - CaseFolding.text -> 17, copyright symbol as is
 - icudt78b
 - 17-beta
 - ... and 1 more: https://git.openjdk.org/jdk/compare/c26db986...088cdaea

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/28093/files
  - new: https://git.openjdk.org/jdk/pull/28093/files/d9cff00a..088cdaea

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28093&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28093&range=00-01

  Stats: 7827 lines in 200 files changed: 5016 ins; 1574 del; 1237 mod
  Patch: https://git.openjdk.org/jdk/pull/28093.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28093/head:pull/28093

PR: https://git.openjdk.org/jdk/pull/28093