Add regression tests

Author: nicolasstucki

tests/pos/i9295b.scala

@@ -0,0 +1,12 @@
+import scala.language.dynamics
+
+class Foo extends Dynamic {
+  def applyDynamic(name: String)()(using DummyImplicit): Bar = ???
+}
+
+class Bar extends Dynamic {
+  def applyDynamic(name: String)(x: Int) = ???
+}
+
+val foo = new Foo
+def baz = foo.blah().apply(42)

tests/pos/i9295c.scala

@@ -0,0 +1,12 @@
+import scala.language.dynamics
+
+class Foo extends Dynamic {
+  def selectDynamic(name: String)(using DummyImplicit): Bar = ???
+}
+
+class Bar extends Dynamic {
+  def applyDynamic(name: String)(x: Int) = ???
+}
+
+val foo = new Foo
+def baz = foo.blah.apply(42)