Stable Pool: ongoing reentrancy protection

[EndymionJkb]

Description

ComposableStablePool (version 3) was patched for reentrancy; this applies the same (generalized) protections so that any future deployments are safe.

Type of change

• [X] Bug fix
• [ ] New feature
• [ ] Breaking change
• [ ] Dependency changes
• [ ] Code refactor / cleanup
• [ ] Documentation or wording changes
• [ ] Other

Checklist:

• [X] The diff is legible and has no extraneous changes
• [N/A] Complex code has been commented, including external interfaces
• [N/A] Tests are included for all code paths (would be fork tests in the deployment)
• [X] The base branch is either master, or there's a description of how to merge

Issue Resolution

[nventuro]

This was the patch change: https://github.com/balancer/balancer-v2-monorepo/pull/2206

[EndymionJkb]

• what about disableRecoveryMode? It already has access to the vault, but I don't see the protection applied in this branch either. EDIT: it's added in #2330

Yes; didn't want to potentially conflict.