关于图标插件无法加载更多图标

## 使用环境

- 系统版本：13.5.2
- Sketch 版本：95
- Kitchen 版本：3.3.2

## 问题

使用图标插件，进行搜索时，每次出来的图标一页不满，无法加载更多。

Reproduce the icon plugin search in Sketch 95 with Kitchen 3.3.2 and confirm that a page can be partially filled without loading more results. Trace the icon search and pagination/loading entry points in the plugin; done means searches display all available matching icons across pages.

Written by the indexing model from the issue text.