fix(devices): triton version detection always reporting false

triton_version was initialized to False instead of None, causing
the `is None` checks to be skipped and torch_info to report triton=false
even when triton is functional

modules/devices.py

@@ -410,7 +410,7 @@ def test_triton(early: bool = False):
         if debug:
             from modules import errors
             errors.display(e, 'Triton')
-    triton_version = False
+    triton_version = None
     if triton_ok:
         if triton_version is None:
             try: