Reenable sf::Cursor tests

A fun thing about runDisplayTests() is that it means that the tests
won't get run in CI on the DRM code. Technically you can run the
display tests locally when buidling with DRM so these tests will
still fail under those circumstances. Regardless I think this is a
net positive to run the tests in CI.

test/Window/Cursor.test.cpp

@@ -6,8 +6,7 @@
 #include <array>
 #include <type_traits>
 
-// Skip these tests with [.display] because they fail when using DRM which hasn't implemented sf::Cursor
-TEST_CASE("[Window] sf::Cursor", "[.display]")
+TEST_CASE("[Window] sf::Cursor", runDisplayTests())
 {
     SECTION("Type traits")
     {