Add tests for issues fixed in JVM IR

Note that KT-30696 is fixed only in the single-module case, and KT-42012
is not fixed fully (see KT-44855).

 #KT-30041
 #KT-30629
 #KT-30696
 #KT-30933
 #KT-32351
 #KT-32749
 #KT-38849
 #KT-42012
 #KT-42990
 #KT-44234
 #KT-44529
 #KT-44631
 #KT-44647

compiler/testData/codegen/box/properties/lateinit/privateVarInCompanion.kt

@@ -0,0 +1,26 @@
+// IGNORE_BACKEND: JVM
+// KT-44234
+
+class App {
+    val context: Context = Context()
+
+    fun onCreate() {
+        instance = this
+    }
+
+    companion object {
+        private lateinit var instance: App set
+        val context: Context get() = instance.context
+    }
+
+}
+
+class Context {
+    fun print(): String = "OK"
+}
+
+fun box(): String {
+    val app = App()
+    app.onCreate()
+    return App.context.print()
+}