We fix a number of problems:
- grayscale filter not being applied except on desktop Firefox
- incorrect vertical-align on iOS
- image sliders being displayed below the margin on iOS
- carousel indicators flickering at initial load
- very short indicator panel, almost unusable on mobile
- misaligned indicators because of first margin
There are two modes on which these fixes apply:
- image gallery in slideshow
- slideshow in modal
(e.g. obtained by clicking on the gallery set on masonry mode)
Note that due to a refactoring, the gallerySlider was not loaded in the modal,
completely breaking the indicators.
Coauthored by @nle-odoo
opw 1874274
closesodoo/odoo#27226
len-odoo
fd122aec52