fdctl: fix --topo flag handling

[ripatel-fd]

No description provided.

[Copilot]

Pull request overview

Fixes fdctl’s --topo lookup by correcting iteration over the global ACTIONS registry, so topology reconstruction properly stops at the NULL sentinel.

Changes:

• Update reconstruct_topo() in metrics to iterate ACTIONS until *a==NULL.
• Update reconstruct_topo() in mem to iterate ACTIONS until *a==NULL.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/app/shared/commands/metrics.c	Fixes ACTIONS loop termination when selecting an action by --topo.
src/app/shared/commands/mem.c	Fixes ACTIONS loop termination when selecting an action by --topo.