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/boxInline/anonymousObject/kt30696.kt

@@ -0,0 +1,22 @@
+// TARGET_BACKEND: JVM
+// NO_CHECK_LAMBDA_INLINING
+// WITH_RUNTIME
+// IGNORE_BACKEND: JVM
+// IGNORE_BACKEND_MULTI_MODULE: JVM, JVM_IR, JVM_MULTI_MODULE_OLD_AGAINST_IR, JVM_MULTI_MODULE_IR_AGAINST_OLD
+// FILE: 1.kt
+
+interface Flow<T> {
+    val result: String
+}
+
+inline fun <reified T> foo() =
+    object {
+        fun test() = object : Flow<T> {
+            override val result: String = "OK"
+        }
+    }.test()
+
+// FILE: 2.kt
+
+fun box(): String =
+    foo<Any>().result