windows: use directory symlinks for directories

src/install/extract_tarball.zig

@@ -388,7 +388,7 @@ fn extract(this: *const ExtractTarball, tgz_bytes: []const u8) !Install.ExtractD
                 .npm => folder_name[name.len + 1 ..],
                 else => folder_name,
             },
-            .{},
+            .{ .is_directory = true },
         ) catch break :create_index;
     }
 

src/install/install.zig

@@ -7025,7 +7025,7 @@ pub const PackageManager = struct {
                     switch (bun.sys.sys_uv.symlinkUV(
                         link_path,
                         dest_path,
-                        bun.windows.libuv.UV_FS_SYMLINK_JUNCTION,
+                        bun.windows.libuv.UV_FS_SYMLINK_DIR,
                     )) {
                         .err => |err| {
                             Output.prettyErrorln("<r><red>error:<r> failed to create junction to node_modules in global dir due to error {}", .{err});