JVM IR: generate private @JvmStatic functions as in old backend

#KT-46181 Fixed

compiler/testData/codegen/bytecodeListing/jvmStatic/jvmStaticWithDefaultParameters.kt

@@ -0,0 +1,13 @@
+// WITH_RUNTIME
+
+class WithCompanion {
+    companion object {
+        @JvmStatic
+        fun foo(x: Int = 1) {}
+    }
+}
+
+object AnObject {
+    @JvmStatic
+    fun foo(x: Int = 1) {}
+}