command: Add test for invalid selected workspace
command: Add test for invalid selected workspace

If somehow an invalid workspace has been selected, the Meta.Workspace
method should not return an error, to ensure that we don't break any
existing workflows with invalid workspace names.

pdecat/terraform,apparentlymart/terraform,apparentlymart/terraform,pdecat/terraform,hashicorp/terraform,ewbankkit/terraform,pdecat/terraform,pdecat/terraform,tommynsong/terraform,rnaveiras/terraform,hashicorp/terraform,rnaveiras/terraform,hashicorp/terraform,ewbankkit/terraform,apparentlymart/terraform,ewbankkit/terraform,rnaveiras/terraform,ewbankkit/terraform,tommynsong/terraform,apparentlymart/terraform,apparentlymart/terraform,tommynsong/terraform