Merge pull request #8476 from dotty-staging/fix-#7262

Fix #7262: Add regression test

Author: liufengyun

tests/pos/i7262.scala

@@ -0,0 +1,6 @@
+import scala.quoted._
+class Foo {
+  def f[T](t: Type[T])(using QuoteContext) = t match {
+    case '[ Int *: Unit ] =>
+  }
+}