hg: jdk/sandbox: 8244245: localizedBy() should override localized values with default values

[chris.hegarty at oracle.com]

Changeset: 4856a7a80c71
Author:    naoto
Date:      2020-05-07 09:27 -0700
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/4856a7a80c71

8244245: localizedBy() should override localized values with default values
Reviewed-by: joehw, rriggs, scolebourne

! src/java.base/share/classes/java/time/format/DateTimeFormatter.java
! test/jdk/java/time/test/java/time/format/TestUnicodeExtension.java