Bug: Creating a new grammar element without specifying MID when a document has ENABLE_MID: True #2379
Description
Describe the bug
error: could not parse file: /Users/Stanislaw/workspace/projects/strictdoc-project/strictdoc/docs/strictdoc_25_design.sdoc.
Semantic error: Grammar element 'DESIGN' is missing the MID field which contradicts to the DOCUMENT's ENABLE_MID setting.
Location: /Users/Stanislaw/workspace/projects/strictdoc-project/strictdoc/docs/strictdoc_25_design.sdoc:1:1
Hint: Either disable the ENABLE_MID option or ensure that every element has the MID field defined.
Expected behavior
Creating a grammar element in a document that has ENABLE_MID: True must result in the MID field automatically substituted and a validation must prevent removing MID.