[IMP] theme_*: explode masonry snippet

See community commit for details

Note: this also fixes avantgarde svg/screenshot at the same time: we
remove the s_masonry_block but add the missing carousel.

(image contribution by MANO)

closes odoo/design-themes#1020

Related: odoo/odoo#183755
Related: odoo/upgrade#6642
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>
Co-authored-by: mano-odoo <mano@odoo.com>

theme_avantgarde/__manifest__.py

@@ -23,7 +23,7 @@
         'website.library_image_16': '/theme_avantgarde/static/src/img/pictures/library_image_16.jpg',
     },
     'configurator_snippets': {
-        'homepage': ['s_sidegrid', 's_features_wall', 's_masonry_block', 's_carousel', 's_timeline', 's_quadrant'],
+        'homepage': ['s_sidegrid', 's_features_wall', 's_carousel', 's_timeline', 's_quadrant'],
     },
     'depends': ['theme_common'],
     'license': 'LGPL-3',