macOS: Do not send control characters as UTF8 keyboard text

Fixes a regression where `ctrl+enter` was not encoding properly since
our input stack changes.

src/input/KeyEncoder.zig

@@ -35,7 +35,7 @@ pub fn encode(
     self: *const KeyEncoder,
     buf: []u8,
 ) ![]const u8 {
-    // log.warn("KEYENCODER self={}", .{self.j});
+    // log.warn("KEYENCODER self={}", .{self.*});
     if (self.kitty_flags.int() != 0) return try self.kitty(buf);
     return try self.legacy(buf);
 }