Do not require experimental propagation for body usages in same module

Unless it's a usage inside the body of an effectively public inline
function

 #KT-22759 In Progress

compiler/testData/diagnostics/testsWithStdLib/experimental/classMembersOverlyExperimental.txt

@@ -1,3 +1,4 @@
+// -- Module: <api> --
 package
 
 package api {
@@ -27,6 +28,13 @@ package api {
     }
 }
 
+
+// -- Module: <usage> --
+package
+
+package api {
+}
+
 package usage {
     public fun use(): kotlin.Unit
 }