Improve error handling of incorrectly used flags

[yhakbar]

When a flag is used on the wrong Terragrunt command, users should be given guidance on the best way to address it.

$terragrunt --experiment cli-redesign --terragrunt-out-dir /tmp/plan  run  -- plan
19:11:55.541 ERROR  OpenTofu has no command named "/tmp/plan". To see all of OpenTofu's top-level commands, run: tofu -help

We should do a preliminary assessment of potentially misused flags and surface a better error so that users know how to recover more easily.

e.g.

$terragrunt --experiment cli-redesign --terragrunt-out-dir /tmp/plan  run  -- plan
19:11:55.541 ERROR  flag --terragrunt-out-dir is not a valid flag for plan. Did you mean to use 'run-all plan'?

Blocked by #3723