fix: support PreviewGroup#items locating when clicking image

[vagusX]

• 修复 PreviewGroup#items 自定义时，默认定位到第 0 张的问题（因为查找按照自增 id 去查找了，此时应跳过查找）

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Name	Status	Preview	Comments	Updated (UTC)
image	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 15, 2024 6:41am

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.78%. Comparing base (66b57c2) to head (c46cdb3).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #344 +/- ## ======================================= Coverage 99.77% 99.78% ======================================= Files 15 15 Lines 454 456 +2 Branches 125 128 +3 ======================================= + Hits 453 455 +2 Misses 1 1 ```

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[afc163]

你为啥会需要这个？current 不够用么

[vagusX]

你为啥会需要这个？current 不够用么

就是不够简洁，current 要完全受控才能用，