[lc] support decompiled facade only for .class

we have support only for KtClsFile (see decompiled light classes) so kotlin_builtins and kotlin_metadata should be ignored

^KT-53543

analysis/decompiled/light-classes-for-decompiled/src/org/jetbrains/kotlin/analysis/decompiled/light/classes/DecompiledLightClassesFactory.kt

@@ -113,7 +113,7 @@ object DecompiledLightClassesFactory {
     ): KtLightClassForFacade? {
         assert(files.all(KtFile::isCompiled))
         val file = files.firstOrNull { it.javaFileFacadeFqName == facadeClassFqName } as? KtClsFile
-            ?: error("Can't find the representative decompiled file for $facadeClassFqName")
+            ?: error("Can't find the representative decompiled file for $facadeClassFqName in ${files.map { it.name }}")
 
         return createLightClassForDecompiledKotlinFile(project, file) { kotlinClsFile, javaClsClass, classOrObject ->
             KtLightClassForDecompiledFacade(javaClsClass, javaClsClass.parent, kotlinClsFile, classOrObject, files)

analysis/light-classes-base/src/org/jetbrains/kotlin/asJava/KotlinAsJavaSupportBase.kt

@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.psi.KtFile
 abstract class KotlinAsJavaSupportBase<TModule>(protected val project: Project) : KotlinAsJavaSupport() {
     fun createLightFacade(file: KtFile): KtLightClassForFacade? {
         if (file.isScript()) return null
+        if (file.isCompiled && !file.name.endsWith(".class")) return null
 
         val module = file.findModule().takeIf { facadeIsApplicable(it, file) } ?: return null
         val facadeFqName = file.javaFileFacadeFqName