[IMP] theme_*: adapt s_images_mosaic

This commit adapts images for s_images_mosaic, added in
https://github.com/odoo/odoo/pull/176575

task-4105446
Part of task-4077427

Part-of: odoo/design-themes#919
Related: odoo/odoo#180736
Signed-off-by: Serge Bayet (seba) <seba@odoo.com>
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

theme_notes/__manifest__.py

@@ -15,6 +15,7 @@
         'views/snippets/s_carousel.xml',
         'views/snippets/s_striped_top.xml',
         'views/snippets/s_image_text.xml',
+        'views/snippets/s_images_mosaic.xml',
         'views/snippets/s_media_list.xml',
         'views/snippets/s_company_team.xml',
         'views/snippets/s_masonry_block.xml',