[vernac] taint two out-of-api `to_constr` use in `comDefinition`.
[vernac] taint two out-of-api `to_constr` use in `comDefinition`.

This should fix #7448 and #7265.

ppedrot/coq,SkySkimmer/coq,coq/coq,Matafou/coq,ejgallego/coq,SkySkimmer/coq,SkySkimmer/coq,SkySkimmer/coq,Matafou/coq,Zimmi48/coq,gares/coq,maximedenes/coq,Zimmi48/coq,JasonGross/coq,Zimmi48/coq,silene/coq,JasonGross/coq,gares/coq,maximedenes/coq,coq/coq,coq/coq,ppedrot/coq,gares/coq,gares/coq,ppedrot/coq,maximedenes/coq,maximedenes/coq,ejgallego/coq,ppedrot/coq,Matafou/coq,ejgallego/coq,gares/coq,silene/coq,JasonGross/coq,maximedenes/coq,JasonGross/coq,ppedrot/coq,ejgallego/coq,coq/coq,Zimmi48/coq,silene/coq