[Analysis Api] Expose klibSourceFile via KtKlibSourceFileProviderMixIn

This `klibSourceFile` information is deserialized from klibs
to retain the information of the original SourceFile location
of a declaration.

^KT-66271 Fixed

analysis/analysis-api/testData/components/klibSourceFileNameProvider/getKlibSourceFileName/class.kt

@@ -0,0 +1,10 @@
+// TARGET_PLATFORM: JS
+// MODULE_KIND: LibraryBinary
+
+// FILE: Some.kt
+package some
+class Foo
+
+// FILE: Other.kt
+package other
+class Bar