Update src/browser/webapi/collections/HTMLCollection.zig

Co-authored-by: Karl Seguin <karlseguin@users.noreply.github.com>

src/browser/webapi/collections/HTMLCollection.zig

@@ -235,7 +235,7 @@ pub const JsApi = struct {
         };
 
         var names: std.ArrayList([]const u8) = .{};
-        const arena = exec.call_arena;
+        const arena = exec.local_arena;
 
         const len = self.length(frame);
         for (0..len) |i| {