[next gen on clould] evict-slow-store-scheduler is enabled even though evict-slow-store-scheduler is not supported

[Lily2025]

Bug Report

What did you do?

run next gen cluster

What did you expect to see?

evict-slow-store-scheduler is disable by default

What did you see instead?

evict-slow-store-scheduler is enabled even through evict-slow-store-scheduler is not supported

What version of PD are you using (pd-server -V)?

sh-5.1# ./pd-server -V
Release Version: v9.0.0-beta.2.pre-50-g6c9e60f
Edition: Enterprise
Kernel Type: Next Generation
Git Commit Hash: 6c9e60f
Git Branch: HEAD
UTC Build Time: 2025-07-31 10:58:35

[Lily2025]

/severity moderate
/assign rleungx
/remove-type bug