can't export after editing a value in the KOS "current requested procedure evidence sequence"

[bjacquemoud]

Bug description

one can export a DCM file after editing some value field but there is a JS issue :
ie "a react-dom.production.min.js:52 Uncaught TypeError: Cannot set properties of undefined (setting 'Value')"
when editing a for instance the "Study Instance UID" in the "current requested procedure evidence sequence"

Steps for reproduction
load any KO dicom and edit this field value or any other in the sequence

Expected behavior

export should be possible

Additional context (e.g. screenshots)