Fix broad exception handling in CLI step lookup and resume run-id validation

[LuisJG8]

PR Type

• Bug fix
• New feature
• Core Runtime change (higher bar -- see CONTRIBUTING.md)
• Docs / tooling
• Refactoring

Summary

Hi, this PR fixes CLI error-handling behavior in two command paths.

In metaflow/cli_components/step_cmd.py, the step lookup now catches only AttributeError when a step is missing, instead of a bare except. In metaflow/cli_components/run_cmds.py, run_id validation now catches only TypeError and ValueError when checking whether the value is an integer.

I added these changes to prevent unrelated internal exceptions from being swallowed and reported as user-facing command errors, while preserving existing CLI behavior for valid and invalid inputs.

[greptile-apps]

Greptile Summary

This PR tightens two overly broad except: clauses in CLI command handlers, replacing them with the specific exception types each code path is actually expected to raise.

• In run_cmds.py, the int(run_id) conversion now catches only TypeError and ValueError, which are the only exceptions that can realistically arise when converting a CLI string argument to an integer.
• In step_cmd.py, the getattr call now catches only AttributeError, which is the precise exception raised when a flow attribute (step) does not exist.

Confidence Score: 5/5

Safe to merge — both changes are minimal, targeted narrowings of exception scope with no behavioral change on the happy path.

Both changes correctly identify the expected exceptions for their respective operations: ValueError/TypeError for int() conversion of a string, and AttributeError for a missing getattr result. No logic is altered, no new code paths are introduced, and the fix prevents real internal exceptions from being silently swallowed and misreported as user-facing CLI errors.

No files require special attention.

Important Files Changed

Filename	Overview
metaflow/cli_components/run_cmds.py	Narrows bare except: to except (TypeError, ValueError): when calling int(run_id) — correct set of exceptions for integer conversion of a CLI string argument.
metaflow/cli_components/step_cmd.py	Narrows bare except: to except AttributeError: on getattr call — correctly targets the only exception getattr raises when an attribute is absent.

_{Reviews (1): Last reviewed commit: "Narrow CLI exception handling in step/re..." | Re-trigger Greptile}