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.
------------- Commit messages: - 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 - initial commit Changes: https://git.openjdk.org/jdk/pull/28093/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28093&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8346944 Stats: 2977 lines in 35 files changed: 1345 ins; 650 del; 982 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
