update test to use empty macro impl

Author: johnduffell

Diff for: tests/pos-macros/i16630.scala

@@ -1,6 +1,14 @@
 import scala.language.experimental.macros
+import scala.quoted.{Quotes, Expr, Type}
 
-trait TraitWithTypeParam[A] {
-  protected inline def foo: Option[A] = ${ ??? }
-  protected def foo: Option[A] = macro ???
-}
+trait TraitWithTypeParam[A]:
+  inline def foo: Option[A] = ${ MacrosImpl.fooImpl[A] }
+  def foo: Option[A] = macro MacrosImpl.compatFooImpl[A]
+
+object MacrosImpl:
+  def fooImpl[A: Type](using quotes: Quotes): Expr[Option[A]] = ???
+  def compatFooImpl[A: c.WeakTypeTag](c: Context): c.Tree = ???
+
+trait Context:
+  type WeakTypeTag[A]
+  type Tree