docs: Update components/table/demo/custom-filter-panel.md (#25502)
docs: Update components/table/demo/custom-filter-panel.md (#25502)

Improved the quality of the sample code.  Considered the case when the data does not exist. If the user searches, an error will be reported.
icaife/ant-design,zheeeng/ant-design,zheeeng/ant-design,ant-design/ant-design,elevensky/ant-design,ant-design/ant-design,ant-design/ant-design,elevensky/ant-design,icaife/ant-design,icaife/ant-design,zheeeng/ant-design,elevensky/ant-design,ant-design/ant-design,elevensky/ant-design,icaife/ant-design,zheeeng/ant-design