fix(form): form field support moblie width best

fix form field support moblie width best

Author: ghuan

packages/form/src/BaseForm/BaseForm.tsx

@@ -553,7 +553,7 @@ function BaseForm<T = Record<string, any>, U = Record<string, any>>(
             maxWidth: '100%',
             '@media screen and (max-width: 575px)': {
               // 减少了 form 的 padding
-              maxWidth: 'calc(100vw - 48px)',
+              maxWidth: 'calc(93vw - 48px)',
             },
             // 适用于短数字，短文本或者选项
             '&-xs': {