[KT] Remove reliance on the origin to check if it's a call to `iterat…

…or.hasNext()`

In K2, `IrStatementOrigin.FOR_LOOP_HAS_NEXT` origin is not set on the loop condition if it does not see a direct call to `iterator.hasNext()` function (case where the iterable overrides `iterator()` and returns a more specific type.)

PiperOrigin-RevId: 696872017

transpiler/java/com/google/j2cl/transpiler/frontend/kotlin/lower/CreateForLoopLowering.kt

@@ -157,6 +157,10 @@ private class LoopTransformer(
     context.ir.symbols.iterable.getSimpleFunction("iterator")!!.owner
   }
 
+  private val iteratorHasNextFunction: IrSimpleFunction by lazy {
+    context.ir.symbols.iterator.getSimpleFunction("hasNext")!!.owner
+  }
+
   override fun visitBlock(expression: IrBlock): IrExpression {
     // The psi2ir transformer wraps all `for` loop into an `IrBlock` with origin `FOR_LOOP`.
     // After this check, we are sure that we are manipulating `while` and `do while` loop that has
@@ -216,7 +220,8 @@ private class LoopTransformer(
     // call on the iterator.
     if (
       innerLoopBody.inductionVariableUpdate != null ||
-        (condition as? IrCall)?.origin != IrStatementOrigin.FOR_LOOP_HAS_NEXT
+        condition !is IrCall ||
+        !condition.symbol.owner.overrides(iteratorHasNextFunction)
     ) {
       return null
     }