Refactor context handling in Assistant's call method

- Removed the forced closure of the script context upon context cancellation in the call method, improving the handling of script execution and cancellation scenarios.
- This change enhances the robustness of the Neo API assistant by preventing potential issues related to premature context termination, paving the way for more reliable assistant functionalities.

neo/assistant/hooks.go

@@ -221,9 +221,6 @@ func (ast *Assistant) call(ctx context.Context, method string, context chatctx.C
 	// Wait for either context cancellation or method completion
 	select {
 	case <-ctx.Done():
-		if scriptCtx != nil {
-			scriptCtx.Close() // Force close the script context
-		}
 		return nil, ctx.Err()
 	case <-done:
 		return result, callErr