JVM_IR: Support inner objects with multiple suspend functions

Do not clean `functionsToAdd`

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/AddContinuationLowering.kt

@@ -560,13 +560,13 @@ private class AddContinuationLowering(private val context: JvmBackendContext) :
                         copyBodyFrom(function)
                         copyAttributes(function)
                     }
-                    functionsToAdd[function.parentAsClass] = mutableSetOf(newFunction)
+                    registerNewFunction(function.parentAsClass, newFunction)
                 }
 
                 val newFunction = if (function.isOverridable) {
                     // Create static method for the suspend state machine method so that reentering the method
                     // does not lead to virtual dispatch to the wrong method.
-                    functionsToAdd.getOrPut(function.parentAsClass) { mutableSetOf() }.add(function)
+                    registerNewFunction(function.parentAsClass, function)
                     createStaticSuspendImpl(function)
                 } else function
 
@@ -602,6 +602,10 @@ private class AddContinuationLowering(private val context: JvmBackendContext) :
         })
     }
 
+    private fun registerNewFunction(container: IrClass, function: IrFunction) {
+        functionsToAdd.getOrPut(container) { mutableSetOf() }.add(function)
+    }
+
     private fun markSuspendLambdas(irElement: IrElement): Pair<List<SuspendLambdaInfo>, List<IrFunction>> {
         val suspendLambdas = arrayListOf<SuspendLambdaInfo>()
         val inlineLambdas = mutableSetOf<IrFunctionReference>()

compiler/testData/codegen/boxInline/suspend/stateMachine/innerObjectSeveralFunctions.kt

@@ -1,5 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
-// IGNORE_BACKEND_MULTI_MODULE: JVM_IR
 // FILE: inlined.kt
 // COMMON_COROUTINES_TEST
 // WITH_RUNTIME

compiler/testData/codegen/boxInline/suspend/stateMachine/oneInlineTwoCaptures.kt

@@ -1,5 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
-// IGNORE_BACKEND_MULTI_MODULE: JVM_IR
 // COMMON_COROUTINES_TEST
 // WITH_RUNTIME
 // WITH_COROUTINES