Merge pull request #6039 from dotty-staging/fix-#6008

Fix #6008: Add test

Author: nicolasstucki

tests/pos/i6008.scala

@@ -0,0 +1,6 @@
+import scala.quoted._
+
+class C {
+    type T = Int
+    def fn(e : Expr[T]) : Expr[T] = '{ $e }
+}