[CI] [GHA] Skip test_div_uint8_cpu on macOS only; unskip test_onnx/test_backend.py in GHA workflows (#20367)

* only skip test if mac

* unskip

* unskip trigger

* skip for onnx fe as well

* do not skip

* return skips and unskip test_backend in Python API 1.0

* rm pr trigger

---------

Co-authored-by: Ilya Lavrenov <ilya.lavrenov@intel.com>

src/bindings/python/tests_compatibility/test_onnx/test_backend.py

@@ -3,6 +3,8 @@
 
 import logging
 
+from sys import platform
+
 import onnx.backend.test
 from tests_compatibility import (
     BACKEND_NAME,
@@ -32,6 +34,7 @@ from tests_compatibility import (
     xfail_issue_48052,
     xfail_issue_52463,
     xfail_issue_58033,
+    xfail_issue_58676,
     xfail_issue_63033,
     xfail_issue_63036,
     xfail_issue_63043,
@@ -809,6 +812,12 @@ tests_expected_to_fail = [
     ),
 ]
 
+if platform == 'darwin':
+    tests_expected_to_fail.append((
+        xfail_issue_58676,
+        "OnnxBackendNodeModelTest.test_div_uint8_cpu"
+    ))
+
 for test_group in tests_expected_to_fail:
     for test_case in test_group[1:]:
         expect_fail("{}".format(test_case), test_group[0])