♻️ refactor(renderer): 重构柱状图渲染器的导入路径

- 将数据修复函数从 `../u-charts` 移动到新的 `../helper-functions/data-fixers` 模块
- 将 `fillCustomColor` 函数移动到新的 `../data-processing/series-calculator` 模块

mini-ui-packages/mini-charts/src/lib/renderers/column-renderer.ts

@@ -20,8 +20,8 @@ import {
   fixColumeStackData,
   fixColumeMeterData,
   fixBarData,
-  fillCustomColor,
-} from '../u-charts';
+} from '../helper-functions/data-fixers';
+import { fillCustomColor } from '../data-processing/series-calculator';
 import { drawToolTipSplitArea, drawBarToolTipSplitArea } from './common-renderer';
 import { assign } from '../config';
 import { hexToRgb } from '../utils/color';