fix(ti-head-filter): 解决表格ti-head-filter组件-选择日期组件-结束日期字段未显示问题

[xyjnu]

PR

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] The commit message follows our Commit Message Guidelines
• [ ] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• [x] Bugfix
• [ ] Feature
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Documentation content changes
• [ ] Other... Please describe:

What is the current behavior?

relevant issue: Issue Number: 25 (https://github.com/opentiny/ng/issues/25)

What is the new behavior?

display endDate label correctly

Does this PR introduce a breaking change?

• [ ] Yes
• [x] No

Other information