Update Bazel to 9.0.0-pre.20251025.1

[vitvakatu]

Pull Request Description

An attempt to fix #14250

Important Notes

Checklist

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[vitvakatu]

It didn’t fix the issue, although removal of scala stuff and simplifications in flatc toolchain seem useful. I think I will revert the version bump, but will try preserving other changes.

[hubertp]

It should be enough for us to update to 8.5.0 (currently on rc2). That claims to include the patch as well.