Rename built-in metadata files starting with dot

Files starting with dot are considered as hidden on Unix systems, and sometimes
are ignored by the tools. For example, Android build tools do not package such
files to the resulting application, which causes Kotlin reflection to fail
there

 #KT-7088 Fixed

js/js.serializer/src/org/jetbrains/kotlin/serialization/js/KotlinJavascriptSerializationUtil.kt

@@ -117,12 +117,13 @@ public object KotlinJavascriptSerializationUtil {
         val fragments = module.getPackageFragmentProvider().getPackageFragments(fqName)
         val packageProto = serializer.packageProto(fragments, skip).build() ?: error("Package fragments not serialized: $fragments")
         packageProto.writeTo(packageStream)
-        writeFun(BuiltInsSerializationUtil.getPackageFilePath(fqName), packageStream)
+        // TODO: don't use fallback paths here
+        writeFun(BuiltInsSerializationUtil.FallbackPaths.getPackageFilePath(fqName), packageStream)
 
         val nameStream = ByteArrayOutputStream()
         val strings = serializer.getStringTable()
         SerializationUtil.serializeStringTable(nameStream, strings.serializeSimpleNames(), strings.serializeQualifiedNames())
-        writeFun(BuiltInsSerializationUtil.getStringTableFilePath(fqName), nameStream)
+        writeFun(BuiltInsSerializationUtil.FallbackPaths.getStringTableFilePath(fqName), nameStream)
     }
 
     fun getFileName(classDescriptor: ClassDescriptor): String {