Fix serialization reactions tooltip — radicle-explorer

Display the alias of the reaction author or fallback to their nid

         reaction: string,
       ) => Promise<void>)
     | undefined;
   function authorsToTooltip(authors: Comment["reactions"][0]["authors"]) {
     return authors.map(a => a.alias ?? a.id).join("\n");
   }
 </script>
 <style>

 <div class="reactions">
   {#each reactions as { emoji, authors }}
     {#if handleReaction}
       <IconButton
         on:click={async () => {
           if (handleReaction) {
             await handleReaction(authors, emoji);
           }
         }}>
         <div class="reaction txt-tiny">
     <div title={authorsToTooltip(authors)}>
       {#if handleReaction}
         <IconButton
           on:click={async () => {
             if (handleReaction) {
               await handleReaction(authors, emoji);
             }
           }}>
           <div class="reaction txt-tiny">
             <span>{emoji}</span>
             <span>{authors.length}</span>
           </div>
         </IconButton>
       {:else}
         <div class="reaction txt-tiny" style="padding: 2px 4px;">
           <span>{emoji}</span>
           <span title={authors.join("\n")}>{authors.length}</span>
           <span>{authors.length}</span>
         </div>
       </IconButton>
     {:else}
       <div class="reaction txt-tiny" style="padding: 2px 4px;">
         <span>{emoji}</span>
         <span title={authors.join("\n")}>{authors.length}</span>
       </div>
     {/if}
       {/if}
     </div>
   {/each}
 </div>