Constrain image heights in feeds and threads (#5129)

* Limit height of images within posts

* Add some future-proofness

* Comments, improve a11y

* Adjust ALT, add crop icon

* Fix disableCrop in record-with-media posts

* Clean up aspect ratios, handle very tall images

* Handle record-with-media separately, clarify intent using enums

* Adjust spacing

* Adjust rwm embed image size on mobile

* Only do reduced layout if images embed

* Adjust gap in small embed variant

* Clean up grid layout

* Hide badge on small variant with one image

* Remove crop icon from image grid, leave on single image

* Fix sizing in Firefox

* Fix fullBleed variant

src/view/com/post/Post.tsx

@@ -32,7 +32,7 @@ import {LabelsOnMyPost} from '../../../components/moderation/LabelsOnMe'
 import {PostAlerts} from '../../../components/moderation/PostAlerts'
 import {Link, TextLink} from '../util/Link'
 import {PostCtrls} from '../util/post-ctrls/PostCtrls'
-import {PostEmbeds} from '../util/post-embeds'
+import {PostEmbeds, PostEmbedViewContext} from '../util/post-embeds'
 import {PostMeta} from '../util/PostMeta'
 import {Text} from '../util/text/Text'
 import {PreviewableUserAvatar} from '../util/UserAvatar'
@@ -238,7 +238,11 @@ function PostInner({
               />
             ) : undefined}
             {post.embed ? (
-              <PostEmbeds embed={post.embed} moderation={moderation} />
+              <PostEmbeds
+                embed={post.embed}
+                moderation={moderation}
+                viewContext={PostEmbedViewContext.Feed}
+              />
             ) : null}
           </ContentHider>
           <PostCtrls