In the "New objects from text modal", some texts can not be entered

[pcdavid]

Steps to reproduce

1. On a project which editable (not read-only) model elements, select and element (e.g. a Package) from the Explorer.
2. Open its context menu and select New objects from text.
3. A modal titled Enter or paste SysMLv2 text to create new objects in the model appears, with a large text box which has the focus.
4. Type "sample" inside the text box.

As soon as you hit "s", the keyboard focus is lost from the text box, and nothing you type is actually entered.

[pcdavid]

Probably related/similar to eclipse-sirius/sirius-web#5675.

[pcdavid]

See eclipse-sirius/sirius-web#5675 for an equivalent issue (and fix) in Sirius Web.