fix: Only show "Cancelled" for explicitly cancelled turns (#1467)

## Problem

Tool calls pending permission incorrectly flash "(Cancelled)" because wasCancelled triggers on turnComplete, not just turnCancelled.

Closes #1267

## Changes

  1. Remove turnComplete from wasCancelled check in useToolCallStatus
  2. Only show "(Cancelled)" when stopReason is actually "cancelled"

## How did you test this?

Manually

Author: charlesvien

apps/code/src/renderer/features/sessions/components/session-update/toolCallUtils.tsx

@@ -51,7 +51,7 @@ export function useToolCallStatus(
   const isIncomplete = status === "pending" || status === "in_progress";
   const isLoading = isIncomplete && !turnCancelled && !turnComplete;
   const isFailed = status === "failed";
-  const wasCancelled = isIncomplete && (turnCancelled || turnComplete);
+  const wasCancelled = isIncomplete && turnCancelled;
   const isComplete = status === "completed";
 
   return { isIncomplete, isLoading, isFailed, wasCancelled, isComplete };