Skip PE-PWR/PE-VIA without datasheet current (2.61.1).

Trace-width vs current runs only with I_load/Imax/I_abs. Missing I is a
skip, not INFO INSUFFICIENT, not USB 500 mA, not Iout_max-as-load.

tests/test_interface_class_check.py

@@ -607,3 +607,16 @@ def test_does_not_use_layout_geometry():
     assert "LayoutPad" not in src
     assert "LayoutSegment" not in src
     assert "LayoutZone" not in src
+
+
+def test_usbc_vbus_does_not_invent_usb_500ma():
+    """No typical USB current and no PE-PWR check without datasheet I."""
+    findings = check_interface_classes(_usbc_device_graph())
+    blob = " ".join(
+        " ".join(filter(None, (f.finding, f.why, f.facts, f.requirement, f.inference)))
+        for f in findings
+    ).lower()
+    assert "500 ma" not in blob
+    assert "500ma" not in blob
+    assert "0.5 a" not in blob
+    assert not any(f.rule_id in {"PE-PWR-001", "PE-VIA-001"} for f in findings)