The FieldTextHtmlSimple widget would focus on itself when changing its
value not by direct user interaction. But if this change was coming
from next/previous record, or an onchange that was breaking the
"autofocus" heuristic for field in Odoo.
With this commit:
- the autofocus heuristic is kept,
- if focused, selection is set at the end if it is possible on the
browser, else (old internet explorer and not visible field) the
selection is at the beginning.
opw-660486