Support --incompatible_struct_has_no_methods for Bazel 8 preview

[Silic0nS0ldier]

Flag is currently flipped in Bazel 8 preview releases. This change address the following issue affecting the repo rule yarn_install.

ERROR: An error occurred during the fetch of repository '____':
   Traceback (most recent call last):
	File "{output_base}/external/build_bazel_rules_nodejs/internal/npm_install/npm_install.bzl", line 919, column 24, in _yarn_install_impl
		_create_build_files(repository_ctx, "yarn_install", node, repository_ctx.attr.yarn_lock, repository_ctx.attr.generate_local_modules_build_files)
	File "{output_base}/external/build_bazel_rules_nodejs/internal/npm_install/npm_install.bzl", line 457, column 6, in _create_build_files
		).to_json()
Error: 'struct' value has no field or method 'to_json'

[lamcw]

LGTM