Improve "replied to a post" component (#8602)

* unify component

* change bottom padding from 2px to 4px

src/components/Post/PostRepliedTo.tsx

@@ -0,0 +1,63 @@
+import {View} from 'react-native'
+import {Trans} from '@lingui/macro'
+
+import {useSession} from '#/state/session'
+import {UserInfoText} from '#/view/com/util/UserInfoText'
+import {atoms as a, useTheme} from '#/alf'
+import {ArrowCornerDownRight_Stroke2_Corner2_Rounded as ArrowCornerDownRightIcon} from '#/components/icons/ArrowCornerDownRight'
+import {ProfileHoverCard} from '#/components/ProfileHoverCard'
+import {Text} from '#/components/Typography'
+import type * as bsky from '#/types/bsky'
+
+export function PostRepliedTo({
+  parentAuthor,
+  isParentBlocked,
+  isParentNotFound,
+}: {
+  parentAuthor: string | bsky.profile.AnyProfileView | undefined
+  isParentBlocked?: boolean
+  isParentNotFound?: boolean
+}) {
+  const t = useTheme()
+  const {currentAccount} = useSession()
+
+  const textStyle = [a.text_sm, t.atoms.text_contrast_medium, a.leading_snug]
+
+  let label
+  if (isParentBlocked) {
+    label = <Trans context="description">Replied to a blocked post</Trans>
+  } else if (isParentNotFound) {
+    label = <Trans context="description">Replied to a post</Trans>
+  } else if (parentAuthor) {
+    const did =
+      typeof parentAuthor === 'string' ? parentAuthor : parentAuthor.did
+    const isMe = currentAccount?.did === did
+    if (isMe) {
+      label = <Trans context="description">Replied to you</Trans>
+    } else {
+      label = (
+        <Trans context="description">
+          Replied to{' '}
+          <ProfileHoverCard did={did}>
+            <UserInfoText did={did} attr="displayName" style={textStyle} />
+          </ProfileHoverCard>
+        </Trans>
+      )
+    }
+  }
+
+  if (!label) {
+    // Should not happen.
+    return null
+  }
+
+  return (
+    <View style={[a.flex_row, a.align_center, a.pb_xs, a.gap_xs]}>
+      <ArrowCornerDownRightIcon
+        size="xs"
+        style={[t.atoms.text_contrast_medium, {top: -1}]}
+      />
+      <Text style={textStyle}>{label}</Text>
+    </View>
+  )
+}