[Glitch] Make account header profile pic exactly 2x post profile pic

Port 0789ec93f8 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/features/account_timeline/components/account_header.tsx

@@ -877,7 +877,7 @@ export const AccountHeader: React.FC<{
             >
               <Avatar
                 account={suspended || hidden ? undefined : account}
-                size={90}
+                size={92}
               />
             </a>
 

app/javascript/flavours/glitch/styles/components.scss

@@ -8266,7 +8266,6 @@ noscript {
     .avatar {
       display: block;
       flex: 0 0 auto;
-      width: 94px;
 
       .account__avatar {
         background: var(--background-color);