Do not assert existence of metadata for local delegated properties

Local delegated property may origin from a body of inlined function.
In that case, they contain no metatada - which is ok, as the original
local delegated properties contain it and will be serialized.

^KT-58780: Fixed

compiler/fir/fir2ir/jvm-backend/src/org/jetbrains/kotlin/fir/backend/jvm/FirMetadataSerializer.kt

@@ -54,8 +54,8 @@ fun makeFirMetadataSerializerForIrClass(
     irActualizedResult: IrActualizedResult?
 ): FirMetadataSerializer {
     val approximator = TypeApproximatorForMetadataSerializer(session)
-    val localDelegatedProperties = context.localDelegatedProperties[irClass.attributeOwnerId]?.map {
-        (it.owner.metadata as FirMetadataSource.Property).fir.copyToFreeProperty(approximator)
+    val localDelegatedProperties = context.localDelegatedProperties[irClass.attributeOwnerId]?.mapNotNull {
+        (it.owner.metadata as? FirMetadataSource.Property)?.fir?.copyToFreeProperty(approximator)
     } ?: emptyList()
     val firSerializerExtension = FirJvmSerializerExtension(
         session, serializationBindings, context.state, irClass.metadata, localDelegatedProperties,

compiler/testData/codegen/boxInline/delegatedProperty/kt48498.kt

@@ -1,4 +1,3 @@
-// IGNORE_INLINER_K2: IR
 // FILE: 1.kt
 
 package x

compiler/testData/codegen/boxInline/delegatedProperty/local.kt

@@ -1,4 +1,3 @@
-// IGNORE_INLINER_K2: IR
 // FILE: 1.kt
 package test
 

compiler/testData/codegen/boxInline/delegatedProperty/localDeclaredInLambda.kt

@@ -1,4 +1,3 @@
-// IGNORE_INLINER_K2: IR
 // IGNORE_BACKEND_MULTI_MODULE: JVM, JVM_MULTI_MODULE_IR_AGAINST_OLD
 // FILE: test.kt
 package test

compiler/testData/codegen/boxInline/delegatedProperty/localInAnonymousObject.kt

@@ -1,4 +1,3 @@
-// IGNORE_INLINER_K2: IR
 // FILE: 1.kt
 package test
 

compiler/testData/codegen/boxInline/delegatedProperty/localInLambda.kt

@@ -1,4 +1,3 @@
-// IGNORE_INLINER_K2: IR
 // FILE: 1.kt
 package test