git: openjdk/leyden: premain: Merged updates from EA2 release notes (https://github.com/openjdk/leyden/blob/leyden-ea2-release-notes/README.md)

[Ioi Lam]

Changeset: bdb98387
Branch: premain
Author:    Ioi Lam <iklam at openjdk.org>
Date:      2025-09-11 20:20:09 +0000
URL:       https://git.openjdk.org/leyden/commit/bdb983878240906aeecd59a9d95e8978ae8b82a5

Merged updates from EA2 release notes (https://github.com/openjdk/leyden/blob/leyden-ea2-release-notes/README.md)

! README.md