Workaround for the case when some classes are unloaded during ranking (KT-25774)

It's important that ranking preserve order of files found
in findFilesByNameInPackage()

It's only a workaround because it's expected for debugger to have
classes unloaded and some valid variants might get bad rank and
rejected because of that.

 #KT-25774 Fixed

idea/testData/debugger/fileRanking/parametersWithUnloadedClass.kt

@@ -0,0 +1,35 @@
+//FILE: a/a.kt
+package a
+
+import c.*
+
+class B : A<SomeImpl>() {
+    override fun x(some: SomeImpl) {
+        foo()
+    }
+}
+
+// DO_NOT_LOAD: a.SomeImpl
+class SomeImpl : Some()
+
+//FILE: b/a.kt
+package b
+
+import c.*
+
+class B : A<Some>() {
+    override fun x(some: Some) {
+        foo()
+    }
+}
+
+//FILE: c/c.kt
+package c
+
+open class Some
+
+abstract class A<T: Some> {
+    abstract fun x(a: T)
+}
+
+fun foo() {}