fix: resolve no date header width when sticky (#564)

Author: shaodahong

src/Table.tsx

@@ -515,11 +515,11 @@ function Table<RecordType extends DefaultRecordType>(props: TableProps<RecordTyp
     if (fixColumn) {
       return scroll.x === 'max-content' ? 'auto' : 'fixed';
     }
-    if (fixHeader || flattenColumns.some(({ ellipsis }) => ellipsis)) {
+    if (fixHeader || isSticky || flattenColumns.some(({ ellipsis }) => ellipsis)) {
       return 'fixed';
     }
     return 'auto';
-  }, [fixHeader, fixColumn, flattenColumns, tableLayout]);
+  }, [fixHeader, fixColumn, flattenColumns, tableLayout, isSticky]);
 
   let groupTableNode: React.ReactNode;