Revert "Revert "Fix undefined block (#4471)" (#4472)"

This reverts commit 848151c4f9.

src/components/ProfileHoverCard/index.web.tsx

@@ -370,7 +370,10 @@ function Inner({
     profile: profileShadow,
     logContext: 'ProfileHoverCard',
   })
-  const blockHide = profile.viewer?.blocking || profile.viewer?.blockedBy
+  const isProfileBlocked =
+    profile.viewer?.blocking ||
+    profile.viewer?.blockedBy ||
+    profile.viewer?.blockingByList
   const following = formatCount(profile.followsCount || 0)
   const followers = formatCount(profile.followersCount || 0)
   const pluralizedFollowers = plural(profile.followersCount || 0, {
@@ -401,7 +404,7 @@ function Inner({
           />
         </Link>
 
-        {!isMe && (
+        {!isMe && !isProfileBlocked && (
           <Button
             size="small"
             color={profileShadow.viewer?.following ? 'secondary' : 'primary'}
@@ -439,7 +442,7 @@ function Inner({
         </View>
       </Link>
 
-      {!blockHide && (
+      {!isProfileBlocked && (
         <>
           <View style={[a.flex_row, a.flex_wrap, a.gap_md, a.pt_xs]}>
             <InlineLinkText

src/view/com/posts/FeedItem.tsx

@@ -196,6 +196,12 @@ let FeedItemInner = ({
     },
   ]
 
+  const isParentBlocked = Boolean(
+    parentAuthor?.viewer?.blockedBy ||
+      parentAuthor?.viewer?.blocking ||
+      parentAuthor?.viewer?.blockingByList,
+  )
+
   return (
     <Link
       testID={`feedItem-by-${post.author.handle}`}
@@ -320,7 +326,16 @@ let FeedItemInner = ({
             onOpenAuthor={onOpenAuthor}
           />
           {!isThreadChild && showReplyTo && parentAuthor && (
-            <ReplyToLabel profile={parentAuthor} />
+            <ReplyToLabel
+              profile={
+                isParentBlocked
+                  ? {
+                      ...parentAuthor,
+                      displayName: _(msg`a blocked user`),
+                    }
+                  : parentAuthor
+              }
+            />
           )}
           <LabelsOnMyPost post={post} />
           <PostContent