Fix duplicated characters

This was a regression from c561fbe

Author: filiptronicek

src/client.ts

@@ -162,9 +162,8 @@ async function createTerminal(element: HTMLElement, toDispose: DisposableCollect
         const unwantedSequence = '\x1b[0;276;0c';
         if (buffer.includes(unwantedSequence)) {
             buffer = buffer.replaceAll(unwantedSequence, '');
+            term.write(buffer);
         }
-
-        term.write(buffer);
         buffer = '';
     });