fix(theses): revert last change

theses.yaml

@@ -1173,7 +1173,7 @@ nodes:
                       Particularly in the case of thesis with external supervision (e.g. commissioned by a company), your thesis may be subject to an NDA
                       (non-disclosure agreement).
                       You can adjust your consent for publication again after submission of the thesis and grading."
-                #default: ""
+                default: ""
                 optional: true
                 presets: 
                   - text: "arbeit (mit erg dateien)"
@@ -2178,7 +2178,7 @@ nodes:
                       (non-disclosure agreement).
                       You can adjust your consent for publication again after grading."
                 optional: false
-                #default: ""
+                default: ""
           "kommunikation": *kommunikation-form
           "datum, abgabe, tatsl": &abgabedatum-form-tatsl
             - "5.6":