clutter-i18n: Move the text position 100 px below

On a target board, Status Bar hides the top of the window so
the text from clutter-i18n-gettext looks like not working.
To show the text in a position not to be interfered by Status
Bar, it needs to be moved slightly below.

Signed-off-by: Justin Kim <justin.kim@collabora.com>
Reviewed-by: Philip Withnall <philip.withnall@collabora.co.uk>
Differential Revision: https://phabricator.apertis.org/D4151