Fix stdin overflow bug in hook scripts - truncate chunks to stay within MAX_STDIN limit

Co-authored-by: pangerlkr <73515951+pangerlkr@users.noreply.github.com>

scripts/hooks/post-edit-typecheck.js

@@ -19,7 +19,8 @@ process.stdin.setEncoding("utf8");
 
 process.stdin.on("data", (chunk) => {
   if (data.length < MAX_STDIN) {
-    data += chunk;
+    const remaining = MAX_STDIN - data.length;
+    data += chunk.substring(0, remaining);
   }
 });