Retain strikethrough formatting in message bubble mentions

ts/components/conversation/AtMention.tsx

@@ -10,6 +10,7 @@ export function AtMention({
   direction,
   id,
   isInvisible,
+  isStrikethrough,
   name,
   onClick,
   onKeyUp,
@@ -17,10 +18,23 @@ export function AtMention({
   direction: 'incoming' | 'outgoing' | undefined;
   id: string;
   isInvisible: boolean;
+  isStrikethrough?: boolean;
   name: string;
   onClick: () => void;
   onKeyUp: KeyboardEventHandler;
 }): JSX.Element {
+  const textElement = (
+    <>
+      @
+      <Emojify isInvisible={isInvisible} text={name} />
+    </>
+  );
+  const formattedTextElement = isStrikethrough ? (
+    <s>{textElement}</s>
+  ) : (
+    textElement
+  );
+
   if (isInvisible) {
     return (
       <span
@@ -31,10 +45,7 @@ export function AtMention({
         data-id={id}
         data-title={name}
       >
-        <bdi>
-          @
-          <Emojify isInvisible={isInvisible} text={name} />
-        </bdi>
+        <bdi>{formattedTextElement}</bdi>
       </span>
     );
   }
@@ -52,10 +63,7 @@ export function AtMention({
       data-id={id}
       data-title={name}
     >
-      <bdi>
-        @
-        <Emojify isInvisible={isInvisible} text={name} />
-      </bdi>
+      <bdi>{formattedTextElement}</bdi>
     </span>
   );
 }

ts/components/conversation/MessageTextRenderer.tsx

@@ -240,7 +240,7 @@ function renderNode({
     isInvisible,
     mentions: node.mentions,
     onMentionTrigger,
-    text: node.text,
+    node,
   });
 
   // We use separate elements for these because we want screenreaders to understand them
@@ -287,18 +287,19 @@ function renderMentions({
   emojiSizeClass,
   isInvisible,
   mentions,
+  node,
   onMentionTrigger,
-  text,
 }: {
+  direction: 'incoming' | 'outgoing' | undefined;
+  disableLinks: boolean;
   emojiSizeClass: SizeClassType | undefined;
   isInvisible: boolean;
   mentions: ReadonlyArray<HydratedBodyRangeMention>;
-  text: string;
-  disableLinks: boolean;
-  direction: 'incoming' | 'outgoing' | undefined;
+  node: DisplayNode;
   onMentionTrigger: ((conversationId: string) => void) | undefined;
 }): ReactElement {
   const result: Array<ReactElement> = [];
+  const { text } = node;
 
   let offset = 0;
 
@@ -323,6 +324,7 @@ function renderMentions({
         disableLinks,
         direction,
         name: mention.replacementText,
+        node,
         onMentionTrigger,
       })
     );
@@ -345,19 +347,21 @@ function renderMentions({
 
 function renderMention({
   conversationId,
-  name,
+  direction,
+  disableLinks,
   isInvisible,
   key,
-  disableLinks,
-  direction,
+  name,
+  node,
   onMentionTrigger,
 }: {
   conversationId: string;
-  name: string;
+  direction: 'incoming' | 'outgoing' | undefined;
+  disableLinks: boolean;
   isInvisible: boolean;
   key: string;
-  disableLinks: boolean;
-  direction: 'incoming' | 'outgoing' | undefined;
+  name: string;
+  node: DisplayNode;
   onMentionTrigger: ((conversationId: string) => void) | undefined;
 }): ReactElement {
   if (disableLinks) {
@@ -374,6 +378,7 @@ function renderMention({
       key={key}
       id={conversationId}
       isInvisible={isInvisible}
+      isStrikethrough={node.isStrikethrough}
       name={name}
       direction={direction}
       onClick={() => {