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/inlineClasses/customIterator.kt

@@ -0,0 +1,25 @@
+// IGNORE_BACKEND: JVM
+// DONT_TARGET_EXACT_BACKEND: WASM
+// WASM_MUTE_REASON: STDLIB_TEXT
+// WITH_RUNTIME
+// KT-44529
+
+inline class InlineDouble3(val values: DoubleArray) {
+    operator fun iterator(): DoubleIterator = IteratorImpl(values)
+}
+
+// This iterator returns the first 3 elements of this.values
+private class IteratorImpl(private val values: DoubleArray) : DoubleIterator() {
+    private var index = 0
+    override fun hasNext(): Boolean = index < 3
+    override fun nextDouble(): Double = values[index++]
+}
+
+fun box(): String {
+    val values = doubleArrayOf(1.0, 2.0, 3.0, 4.0)
+    var result = ""
+    for (i in InlineDouble3(values)) {
+        result += i.toString().substring(0, 1)
+    }
+    return if (result == "123") "OK" else "Fail: $result"
+}