Enable ValNum::Interactive test for MSW CI builds too

This test should work after the fix in the parent commit.

tests/validators/valnum.cpp

@@ -262,14 +262,6 @@ TEST_CASE_METHOD(NumValidatorTestCase, "ValNum::NoTrailingZeroes", "[valnum]")
 
 TEST_CASE_METHOD(NumValidatorTestCase, "ValNum::Interactive", "[valnum]")
 {
-#ifdef __WXMSW__
-    // FIXME: This test fails on MSW buildbot slaves although works fine on
-    //        development machine, no idea why. It seems to be a problem with
-    //        wxUIActionSimulator rather the wxListCtrl control itself however.
-    if ( IsAutomaticTest() )
-        return;
-#endif // __WXMSW__
-
     // Set a locale using comma as thousands separator character.
     wxLocale loc(wxLANGUAGE_ENGLISH_UK, wxLOCALE_DONT_LOAD_DEFAULT);