Override h2 min-width in docs-card-container-header for small screens
and add docs-content container query fallback to hide SVG illustrations.
(cherry picked from commit c3d4be4a61)
To increase the ease of development we are moving @angular/docs into the adev directory within this repo. While
we are doing this to improve our development experience in the short term, efforts are also in place
to maintain a division between this @angular/docs (shared) code and adev itself, so that it can be extracted
back out in the future when components is ready to leverage it as well.
PR Close#57132
