perf: change pytest-xdist config from loadfile to loadscope

Author: S1M0N38

pyproject.toml

@@ -39,7 +39,7 @@ lint.task-tags = ["FIX", "TODO", "HACK", "WARN", "PERF", "NOTE", "TEST"]
 [tool.pytest.ini_options]
 asyncio_mode = "auto"
 asyncio_default_fixture_loop_scope = "session"
-addopts = "--dist loadfile"
+addopts = "--dist loadscope"
 markers = [
   "dev: marks tests that are currently developed",
   "integration: marks integration tests that actually start Balatro (deselect with '-m \"not integration\"')",