[FIR] Remove FirJsSyntheticNamesProvider and FirNativeSyntheticNamesProvider.kt

compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/calls/FirSyntheticNamesProvider.kt

@@ -15,4 +15,4 @@ abstract class FirSyntheticNamesProvider : FirSessionComponent {
     abstract fun possiblePropertyNamesByAccessorName(name: Name): List<Name>
 }
 
-val FirSession.syntheticNamesProvider: FirSyntheticNamesProvider by FirSession.sessionComponentAccessor()
+val FirSession.syntheticNamesProvider: FirSyntheticNamesProvider? by FirSession.nullableSessionComponentAccessor()

compiler/fir/providers/src/org/jetbrains/kotlin/fir/resolve/calls/Synthetics.kt

@@ -44,11 +44,23 @@ class FirSyntheticFunctionSymbol(
     callableId: CallableId
 ) : FirNamedFunctionSymbol(callableId), SyntheticSymbol
 
-class FirSyntheticPropertiesScope(
+class FirSyntheticPropertiesScope private constructor(
     val session: FirSession,
-    private val baseScope: FirTypeScope
+    private val baseScope: FirTypeScope,
+    private val syntheticNamesProvider: FirSyntheticNamesProvider
 ) : FirContainingNamesAwareScope() {
-    private val syntheticNamesProvider = session.syntheticNamesProvider
+    companion object {
+        fun createIfSyntheticNamesProviderIsDefined(
+            session: FirSession,
+            baseScope: FirTypeScope
+        ): FirSyntheticPropertiesScope? {
+            val syntheticNamesProvider = session.syntheticNamesProvider
+            return if (syntheticNamesProvider != null)
+                FirSyntheticPropertiesScope(session, baseScope, syntheticNamesProvider)
+            else
+                null
+        }
+    }
 
     override fun processPropertiesByName(name: Name, processor: (FirVariableSymbol<*>) -> Unit) {
         val getterNames = syntheticNamesProvider.possibleGetterNamesByPropertyName(name)

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/tower/TowerLevels.kt

@@ -105,8 +105,8 @@ class MemberScopeTowerLevel(
         }
 
         if (givenExtensionReceiverOptions.isEmpty()) {
-            val withSynthetic = FirSyntheticPropertiesScope(session, scope)
-            withSynthetic.processScopeMembers { symbol ->
+            val withSynthetic = FirSyntheticPropertiesScope.createIfSyntheticNamesProviderIsDefined(session, scope)
+            withSynthetic?.processScopeMembers { symbol ->
                 empty = false
                 output.consumeCandidate(symbol, dispatchReceiverValue, givenExtensionReceiverOptions = emptyList(), scope)
             }