git: openjdk/jdk21u-dev: master: 8341097: GHA: Demote Mac x86 jobs to build only

[Aleksey Shipilev]

Changeset: 460dfef8
Branch: master
Author:    Aleksey Shipilev <shade at openjdk.org>
Date:      2025-10-24 11:36:49 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/460dfef88adb4ab8dafd0c79fef1b5251dc1a163

8341097: GHA: Demote Mac x86 jobs to build only

Backport-of: d66737ea1cfd92bcb208ded4e64822d12760205d

! .github/workflows/main.yml