[enhance](load) Isolate load cancellation in a dedicated thread pool - #68328

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sollhui:improvement/isolate-load-rpc-work-pools

Commits on Sep 21, 2026

[improvement](be) Isolate load control RPCs from heavy load work
sollhui
committed
5bb2475
[refactor](be) Reuse the existing heavy pool for load data work
sollhui
committed
d210181
[refactor](be) Restrict the load-light pool to 32 cancellation workers
sollhui
committed
e9bd049
[fix](be) Make load cancellation worker count configurable
sollhui
committed
bd3fb08
[fix](be) Declare load cancellation pool metrics
sollhui
committed
78c35fe