RFR: 8341097: GHA: Demote Mac x86 jobs to build only [v4]

[Phil Race]

On Mon, 6 Jan 2025 09:37:48 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> See the discussion in the bug. I think we can stop testing Mac x86 in GHA, leaving only the build jobs.
>> 
>> Additional testing:
>>  - [x] GHA passes
>
> Aleksey Shipilev has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains four commits:
> 
>  - Merge branch 'master' into JDK-8341097-gha-no-mac-intel
>  - Merge branch 'master' into JDK-8341097-gha-no-mac-intel
>  - Merge branch 'master' into JDK-8341097-gha-no-mac-intel
>  - Fix

Marked as reviewed by prr (Reviewer).

I don't have any objection to this, but
(1) I'm surprised Microsoft (github) doesn't have  x64 systems that can run macOS14/15
(2) I expect we'll actually support macOS x64 for as long as Apple do .. and since in 2023 you could still get x64 macs I expect it'll be a number of years before support is dropped.
But since you can no longer get them, if MS missed the last order date, they will soon be struggling to have enough to meet demand, which is why the demotion makes sense.

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PR Review: https://git.openjdk.org/jdk/pull/21257#pullrequestreview-2538021515
PR Comment: https://git.openjdk.org/jdk/pull/21257#issuecomment-2578459050