fdo#78214 - rename of '1.2 extended (compat mode)'

Change-Id: I2c0d14f8e015304489d2b199db620bf046758331
Reviewed-on: https://gerrit.libreoffice.org/12069
Reviewed-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>
Tested-by: Samuel Mehrbrodt <s.mehrbrodt@gmail.com>