[Native] Move BuiltinOperatorLowering to a later stage of the lowerings pipeline

This would allow using unlowered operator symbols from IrBuiltIns in all lowerings before BuiltinOperatorLowering.

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/driver/phases/Lowerings.kt

@@ -521,7 +521,6 @@ private fun PhaseEngine<NativeGenerationState>.getAllLowerings() = listOfNotNull
         functionReferencePhase,
         singleAbstractMethodPhase,
         enumWhenPhase,
-        builtinOperatorPhase,
         finallyBlocksPhase,
         enumClassPhase,
         enumUsagePhase,
@@ -534,6 +533,7 @@ private fun PhaseEngine<NativeGenerationState>.getAllLowerings() = listOfNotNull
         objectClassesPhase,
         constantInliningPhase,
         staticInitializersPhase,
+        builtinOperatorPhase,
         bridgesPhase,
         exportInternalAbiPhase.takeIf { context.config.produce.isCache },
         useInternalAbiPhase,