fix: correct WASM patch hunk header for terminal.zig

The patch file had incorrect metadata (604 lines vs actual 611 lines)
which could cause git apply to fail or truncate the file.

Regenerated the patch cleanly from the modified ghostty submodule.

Author: sreya

patches/ghostty-wasm-api.patch

@@ -606,10 +606,10 @@ index bc92597f5..d988967f7 100644
      _ = @import("../../lib/allocator.zig");
 diff --git a/src/terminal/c/terminal.zig b/src/terminal/c/terminal.zig
 new file mode 100644
-index 000000000..c39b0791c
+index 000000000..e79702488
 --- /dev/null
 +++ b/src/terminal/c/terminal.zig
-@@ -0,0 +1,604 @@
+@@ -0,0 +1,611 @@
 +//! C API wrapper for Terminal
 +//!
 +//! This provides a C-compatible interface to Ghostty's Terminal for WASM export.