Fix duplicate message logging in from and repeat commands

`Commands.runFromConfig` was calling `handleCommandResult(result)`
internally and also returning the same result to its caller.
The outer driver (`handleCommandRun`) then logged the result
a second time, producing every message twice. Verified on the
reactive-bbq model: 8 completeness warnings became 4 after the
fix — exactly halved, confirming uniform doubling.

The peer helpers `runCommandWithArgs` and `runCommandNamed`
already follow the convention that the outer driver owns
logging; `runFromConfig` was the outlier. Removing the
internal call aligns them.

Affects both `FromCommand` and `RepeatCommand` (the latter
also calls `runFromConfig`).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: reid-spencer

commands/shared/src/main/scala/com/ossuminc/riddl/commands/Commands.scala

@@ -157,7 +157,6 @@ object Commands:
         end if
       }
     }
-    handleCommandResult(result)
     result
   end runFromConfig