Fix ext embeds in DMs (#5419)

* fix ext embeds in DMs

* undo acciental rounding change

src/lib/embeds.ts

@@ -1,7 +1,7 @@
 import {
-  AppBskyFeedDefs,
   AppBskyEmbedRecord,
   AppBskyEmbedRecordWithMedia,
+  AppBskyFeedDefs,
 } from '@atproto/api'
 
 export function isEmbedByEmbedder(

src/view/com/util/post-embeds/ExternalLinkEmbed.tsx

@@ -59,7 +59,7 @@ export const ExternalLinkEmbed = ({
   }
 
   return (
-    <View style={[a.flex_col, a.rounded_sm]}>
+    <View style={[a.flex_col, a.w_full]}>
       <LinkWrapper link={link} onOpen={onOpen} style={style}>
         {imageUri && !embedPlayerParams ? (
           <View>