highlights(Pascal): Fix highlighting of types

A recent change broke highlighting for namespaces & generic types like
`foo.bar` and `foo<t>`.

tests/query/highlights/pascal/test.pas

@@ -0,0 +1,39 @@
+program foobar;
+// ^ keyword
+
+var
+// <- keyword
+  foo: bar;
+// ^ variable
+//     ^ type
+  foo: foo.bar<t>;
+// ^ variable
+//     ^ type
+//         ^ type
+//             ^ type
+begin
+// ^ keyword
+  foo := bar;
+// ^ variable
+//       ^ variable
+  foo;
+// ^ function
+  foo();
+// ^ function
+  foo(bar(xyz));
+// ^ function
+//    ^ function
+//        ^ variable
+  xx + yy;
+// ^ variable
+//     ^ variable
+  xx := y + z + func(a, b, c);
+// ^ variable
+//      ^ variable
+//          ^ variable
+//              ^ function
+//                   ^ variable
+//                      ^ variable
+//                         ^ variable
+end.
+// <- keyword