ssh: enable multiplexing by default

tabby-ssh/src/profiles.ts

@@ -40,7 +40,7 @@ export class SSHProfilesService extends ProfileProvider<SSHProfile> {
             scripts: [],
             socksProxyHost: null,
             socksProxyPort: null,
-            reuseSession: false,
+            reuseSession: true,
         },
     }