feat: Mark the external link icon as aria-hidden (#1346)

Andrew

2024-08-13 d27c29273640b2d67a7af1fa9c6410077c7cbe9f

 quartz/styles/base.scss

@@ -541,3 +541,11 @@
  overflow-x: auto;
  overflow-y: hidden;
}

.external-embed.youtube,
iframe.pdf {
  aspect-ratio: 16 / 9;
  height: 100%;
  width: 100%;
  border-radius: 5px;
}