enhance: opt picker time panel hover to show as placeholder

[zombieJ]

ref https://github.com/ant-design/ant-design/issues/50288

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
picker	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 8, 2024 7:13am

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 78.37838% with 8 lines in your changes missing coverage. Please review.

Project coverage is 95.16%. Comparing base (e2db7d2) to head (2c82e44). Report is 6 commits behind head on master.

Files	Patch %	Lines
src/PickerPanel/TimePanel/TimePanelBody/index.tsx	81.25%	6 Missing :warning:
...PickerPanel/TimePanel/TimePanelBody/TimeColumn.tsx	60.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #858 +/- ## ========================================== - Coverage 95.41% 95.16% -0.25% ========================================== Files 64 64 Lines 2680 2709 +29 Branches 727 757 +30 ========================================== + Hits 2557 2578 +21 - Misses 120 128 +8 Partials 3 3 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[shmdhussain]

This is causing issues when the component is used alone see this code sandbox:

you will see the errors in the console once you hover over the time panel column values.

Error screenshot: