Add test case for runtime behavior

Author: zeptometer

tests/run-macros/quote-match-poly-function.check

@@ -0,0 +1,2 @@
+not matched
+case 2 matched => 5

tests/run-macros/quote-match-poly-function/Macro_1.scala

@@ -0,0 +1,10 @@
+import scala.quoted.*
+
+inline def testExpr(inline body: Any) = ${ testExprImpl1('body) }
+def testExprImpl1(body: Expr[Any])(using Quotes): Expr[String] =
+  body match
+    case '{ [A] => (x : Int, y : Int) => $b(x, y) : Int } =>
+      '{ "case 2 matched => " + $b(2, 3) }
+    case '{ [A] => (x : A, y : A) => $b[A](x, y) : A } =>
+      '{ "case 3 matched => " + $b[String]("truthy", "falsy") }
+    case _ => Expr("not matched")

tests/run-macros/quote-match-poly-function/Test_2.scala

@@ -0,0 +1,3 @@
+@main def Test: Unit =
+    println(testExpr([B] => (x : B, y : B) => x)) // Should match case 3
+    println(testExpr([B] => (x : Int, y : Int) => x + y)) // Should match case 2