Micro-optimization: Optimize List Operations

[kevingamez]

The recommendation to optimize list operations by replacing insert with addAll is considered a micro-optimization because it focuses on a specific, localized improvement within the codebase. In the provided Dart code, there is a segment where a list (wallet.history) is updated by inserting multiple elements from another list (resp.history). The suggestion is to replace the insertinsertAllinsertAll method with addAll, which is expected to provide a marginal performance gain.