FIR: Support typeRef-name label for this

compiler/fir/semantics/src/org/jetbrains/kotlin/fir/declarations/ImplicitReceiverUtils.kt

@@ -168,11 +168,11 @@ class FirTowerDataContext private constructor(
         )
     }
 
-    fun addReceiver(name: Name?, implicitReceiverValue: ImplicitReceiverValue<*>): FirTowerDataContext {
+    fun addReceiver(name: Name?, implicitReceiverValue: ImplicitReceiverValue<*>, additionalLabName: Name? = null): FirTowerDataContext {
         val element = implicitReceiverValue.asTowerDataElement()
         return FirTowerDataContext(
             towerDataElements.add(element),
-            implicitReceiverStack.add(name, implicitReceiverValue),
+            implicitReceiverStack.add(name, implicitReceiverValue, additionalLabName),
             localScopes,
             nonLocalTowerDataElements.add(element)
         )

compiler/fir/semantics/src/org/jetbrains/kotlin/fir/resolve/PersistentImplicitReceiverStack.kt

@@ -42,7 +42,7 @@ class PersistentImplicitReceiverStack private constructor(
         val stack = stack.add(value)
         val originalTypes = originalTypes.add(value.originalType)
         val index = stack.size - 1
-        val receiversPerLabel = name?.let { receiversPerLabel.put(it, value) } ?: receiversPerLabel
+        val receiversPerLabel = receiversPerLabel.putIfNameIsNotNull(name, value).putIfNameIsNotNull(aliasLabel, value)
         val indexesPerSymbol = indexesPerSymbol.put(value.boundSymbol, index)
 
         return PersistentImplicitReceiverStack(
@@ -53,6 +53,12 @@ class PersistentImplicitReceiverStack private constructor(
         )
     }
 
+    private fun PersistentSetMultimap<Name, ImplicitReceiverValue<*>>.putIfNameIsNotNull(name: Name?, value: ImplicitReceiverValue<*>) =
+        if (name != null)
+            put(name, value)
+        else
+            this
+
     fun addContextReceiver(value: ContextReceiverValue<*>): PersistentImplicitReceiverStack {
         val labelName = value.labelName ?: return this