[markdown mode] Always pass through to inner mode when a local mode is active
[markdown mode] Always pass through to inner mode when a local mode is active

Closes #4999

SidPresse/CodeMirror,wingify/CodeMirror,nightwing/CodeMirror,jayaprabhakar/CodeMirror,thomasjm/CodeMirror,jkaplon/CodeMirror,namin/CodeMirror,notepadqq/CodeMirror,namin/CodeMirror,SidPresse/CodeMirror,notepadqq/CodeMirror,wingify/CodeMirror,dperetti/CodeMirror,codio/CodeMirror,jayaprabhakar/CodeMirror,ficristo/CodeMirror,pabloferz/CodeMirror,dperetti/CodeMirror,codio/CodeMirror,jayaprabhakar/CodeMirror,pabloferz/CodeMirror,mtaran-google/CodeMirror,mtaran-google/CodeMirror,dperetti/CodeMirror,SidPresse/CodeMirror,thomasjm/CodeMirror,hackmdio/CodeMirror,nightwing/CodeMirror,jkaplon/CodeMirror,MarcelGerber/CodeMirror,notepadqq/CodeMirror,wingify/CodeMirror,codio/CodeMirror,thomasjm/CodeMirror,MarcelGerber/CodeMirror,pabloferz/CodeMirror,namin/CodeMirror,ficristo/CodeMirror,hackmdio/CodeMirror,ficristo/CodeMirror,mtaran-google/CodeMirror,jkaplon/CodeMirror,nightwing/CodeMirror,hackmdio/CodeMirror,MarcelGerber/CodeMirror