Validate main branche for the upcoming release of MAIN.4.1

[bilboquet]

More precisely, ensure that:
#4941
behave correctly.

[damip]

Also #4947

[Leo-Besancon]

Note: labnet0 now has a (staking) mainnet node on it with both these PRs to help test things out.

[Leo-Besancon]

Done: Update more servers

[damip]

Issues were found. Please summarize them here

[peterjah]

It appears the 4.0 had a bug where CPU is progressively increasing du to ASC pool congestion.
Based on tests on my node and seeing CPU graph of nodes, it seeems the issue is resolved by 4.1.

[peterjah]

There is a potential new issue introduced by 4.1, here is logs of my nodes (with | grep WARN):
It seems unrelated to ASC pool spam.
That said, the node is still working fine

2025-11-27T08:09:01.647857Z  WARN massa_pool_worker::controller_impl: Could not add endorsements to pool: worker channel is full.
2025-11-27T08:09:01.648358Z  WARN massa_pool_worker::controller_impl: Could not add denunciation precursor to pool: worker channel is full.
2025-11-27T08:09:01.649231Z  WARN massa_pool_worker::controller_impl: Could not notify endorsement pool of new final slots: worker channel is full.
2025-11-27T08:09:01.677213Z  WARN massa_pool_worker::controller_impl: Could not add endorsements to pool: worker channel is full.
2025-11-27T08:09:02.059265Z  WARN massa_pool_worker::controller_impl: Could not add endorsements to pool: worker channel is full.
2025-11-27T08:09:02.059887Z  WARN massa_pool_worker::controller_impl: Could not add endorsements to pool: worker channel is full.
2025-11-27T08:09:02.060516Z  WARN massa_pool_worker::controller_impl: Could not add endorsements to pool: worker channel is full.
2025-11-27T08:09:02.060829Z  WARN massa_pool_worker::controller_impl: Could not add endorsements to pool: worker channel is full.
2025-11-27T08:09:02.061086Z  WARN massa_pool_worker::controller_impl: Could not add endorsements to pool: worker channel is full.
2025-11-27T08:09:02.061501Z  WARN massa_pool_worker::controller_impl: Could not add endorsements to pool: worker channel is full.
2025-11-27T08:09:02.061870Z  WARN massa_pool_worker::controller_impl: Could not add endorsements to pool: worker channel is full.
2025-11-27T08:09:02.066386Z  WARN massa_pool_worker::controller_impl: Could not add endorsements to pool: worker channel is full.
2025-11-27T08:09:02.068844Z  WARN massa_pool_worker::controller_impl: Could not add denunciation precursor to pool: worker channel is full.
2025-11-27T08:09:02.098072Z  WARN massa_pool_worker::controller_impl: Could not add endorsements to pool: worker channel is full.
2025-11-27T08:09:02.140482Z  WARN massa_pool_worker::controller_impl: Could not add denunciation precursor to pool: worker channel is full.
2025-11-27T08:09:02.141577Z  WARN massa_pool_worker::controller_impl: Could not notify endorsement pool of new final slots: worker channel is full.