Accept test changes: a raw class getting extracted solely for use in a signature

We could revert this by allowing useType to avoid triggering class-instance extraction when used just for its signature result

Author: smowton

java/ql/test/kotlin/library-tests/instances/classes.expected

@@ -1,4 +1,5 @@
 | TestClassA.kt:2:1:3:1 | TestClassA |
+| TestClassA.kt:2:1:3:1 | TestClassA<> |
 | TestClassAUser.kt:0:0:0:0 | TestClassAUserKt |
 | TestClassAUser.kt:15:1:15:24 | TestClassAUser |
 | file:///!unknown-binary-location/TestClassA.class:0:0:0:0 | TestClassA<TestClassAUser> |