* fix(embed): set color-scheme on iframe to fix Firefox dark mode
Firefox renders a white background in dark mode when color-scheme is 'none' on the iframe. Set color-scheme to match the active theme on both the outer iframe element and the inner document root, so Firefox uses the correct rendering mode from the start and on theme changes.
* fix(embed): default iframe color-scheme to light when no theme set
Changes the fallback from 'light dark' to 'light' to match the inner document's default behavior, which always defaults to light when no theme is specified.
Amir MohamadandGitHub
7ec5af8068