JVM_IR indy-SAM conversions: minor updates

See: KT-44575 KT-44577

KT-44278 KT-26060 KT-42621

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

@@ -13,7 +13,6 @@ import org.jetbrains.kotlin.backend.common.lower.parents
 import org.jetbrains.kotlin.backend.common.phaser.makeIrFilePhase
 import org.jetbrains.kotlin.backend.jvm.JvmBackendContext
 import org.jetbrains.kotlin.backend.jvm.JvmLoweredDeclarationOrigin
-import org.jetbrains.kotlin.backend.jvm.codegen.representativeUpperBound
 import org.jetbrains.kotlin.backend.jvm.ir.*
 import org.jetbrains.kotlin.backend.jvm.lower.inlineclasses.InlineClassAbi
 import org.jetbrains.kotlin.config.JvmSamConversions
@@ -170,15 +169,12 @@ internal class FunctionReferenceLowering(private val context: JvmBackendContext)
     private fun IrType.isProhibitedTypeForIndySamConversion(): Boolean {
         if (this !is IrSimpleType) return false
 
-        val erasedType = when (val classifier = classifier.owner) {
-            is IrTypeParameter ->
-                classifier.representativeUpperBound.withHasQuestionMark(hasQuestionMark)
-            else ->
-                this
+        val erasedClass = when (val classifier = classifier.owner) {
+            is IrTypeParameter -> classifier.erasedUpperBound
+            is IrClass -> classifier
+            else -> throw AssertionError("Unexpected classifier: ${classifier.render()}")
         }
-        val erasedClass = erasedType.getClass() ?: return false
-
-        if (!erasedType.isInlined()) return false
+        if (!erasedClass.isInline) return false
 
         val underlyingType = getInlineClassUnderlyingType(erasedClass) as? IrSimpleType
             ?: throw AssertionError("Underlying type for inline class should be a simple type: ${erasedClass.render()}")