rename `ditto` to the more clear `externalNostrUrl`

src/components/status-action-bar.tsx

@@ -464,13 +464,13 @@ const StatusActionBar: React.FC<IStatusActionBar> = ({
     }
 
     if (features.federating && !account.local) {
-      const ditto: string | undefined = status.ditto?.get('external_url');
-      const { hostname: domain } = new URL(ditto || status.uri);
+      const externalNostrUrl: string | undefined = status.ditto?.get('external_url');
+      const { hostname: domain } = new URL(externalNostrUrl || status.uri);
 
       menu.push({
         text: intl.formatMessage(messages.external, { domain }),
         icon: require('@tabler/icons/outline/external-link.svg'),
-        href: ditto || status.uri,
+        href: externalNostrUrl || status.uri,
         target: '_blank',
       });
     }

src/features/account/components/header.tsx

@@ -311,9 +311,9 @@ const Header: React.FC<IHeader> = ({ account }) => {
       });
     }
 
-    const ditto = account.ditto.external_url ? new URL(account.ditto.external_url).host : undefined;
-    if (features.federating && (!account.local || ditto)) {
-      const domain = ditto || account.fqn.split('@')[1];
+    const externalNostrUrl = account.ditto.external_url ? new URL(account.ditto.external_url).host : undefined;
+    if (features.federating && (!account.local || externalNostrUrl)) {
+      const domain = externalNostrUrl || account.fqn.split('@')[1];
       const url = account.ditto.external_url || account.url;
 
       if (domain && url) {