git: openjdk/jdk21u: master: 8316879: RegionMatches1Tests fails if CompactStrings are disabled after JDK-8302163

[Aleksey Shipilev]

Changeset: 6a4e4920
Author:    Aleksei Voitylov <avoitylov at openjdk.org>
Committer: Aleksey Shipilev <shade at openjdk.org>
Date:      2023-10-04 10:13:25 +0000
URL:       https://git.openjdk.org/jdk21u/commit/6a4e4920193b1a2fe7780007f1613ba972433280

8316879: RegionMatches1Tests fails if CompactStrings are disabled after JDK-8302163

Backport-of: cfcbfc6cae7d8fc276c5a54917e97adea7cf5621

! src/java.base/share/classes/java/lang/String.java
! test/jdk/java/lang/String/RegionMatches.java