[1865] Fix focus loss on some characters in the text import modal

[pcdavid]

See eclipse-sirius/sirius-web@58156cd for the equivalent fix in Sirius Web.

Bug: #1865
Signed-off-by: Pierre-Charles David pierre-charles.david@obeo.fr

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[AxelRICHARD]

A playwright test could be a good idea, in order to avoid regression.

[pcdavid]

A playwright test could be a good idea, in order to avoid regression.

Will do.
Actually, I see that there is an existing Cypress test for this modal, but no Playwright test. Should I take the time to port the existing test to PW and then extend it?