uf_checkmodelfit does not work with glmnet due to extra variablename "glm-DC correction"

[olafdimigen]

uf_checkmodelfit does not work with glmnet due to extra variablename "glm-DC correction"
(Found this bug in my notes, added it here just as a future todo list point.)

[behinger]

we should also check whether it works with TRFs