升级完成后，Select组件 和 DatePicker组件样式展示不对

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The issue only reports incorrect styling after upgrading the Select and DatePicker components; it provides no reproduction, file path, test, or expected appearance. Start by reproducing the upgrade scenario for those two components and locating the affected styles or transformation entry points. Done means the components render with the expected styles after the upgrade and the behavior is covered by an appropriate test.

Written by the indexing model from the issue text.