git: openjdk/leyden: hermetic-java-runtime: Address internal review comments from rasbold@:

[duke]

Changeset: 102440fd
Author:    Jiangli Zhou <jianglizhou at google.com>
Date:      2024-03-13 10:42:00 +0000
URL:       https://git.openjdk.org/leyden/commit/102440fd0d4ee61339efd6ea6b75efbf22a0b3b9

Address internal review comments from rasbold@:
- Rename HERMETIC_IMAGE to HERMETIC_IMAGE_NAME.
- Change 'Executable' to 'Hermetic image' in exception message for consistency.

! src/java.base/share/classes/jdk/internal/misc/JavaHome.java