fix: remove duplicate Id in GeneralDelDto.GetIds()

[KiwiGaze]

[中文版模板 / Chinese template]

🤔 This is a ...

• New feature
• Bug fix
• Site / documentation update
• Demo update
• Component style update
• TypeScript definition update
• Bundle size optimization
• Performance optimization
• Enhancement feature
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• Other (about what?)

🔗 Related issue link

No existing issue — discovered via code review.

💡 Background and solution

GeneralDelDto.GetIds() appends g.Id twice when g.Ids is empty and g.Id > 0:

// Before: g.Id=5, g.Ids=[] → returns [5, 5]
if g.Id != 0 {
    ids = append(ids, g.Id)  // first append
}
if len(g.Ids) > 0 {
    // skipped when Ids is empty
} else {
    if g.Id > 0 {
        ids = append(ids, g.Id)  // duplicate append
    }
}

Simplified to a single linear pass that collects g.Id (if positive), then all positive entries from g.Ids, preserving the existing safety guard that appends 0 when the result is empty (to prevent full-table deletes):

// After: g.Id=5, g.Ids=[] → returns [5]
if g.Id > 0 {
    ids = append(ids, g.Id)
}
for _, id := range g.Ids {
    if id > 0 {
        ids = append(ids, id)
    }
}

📝 Changelog

Language	Changelog
🇺🇸 English	Fix duplicate Id in GeneralDelDto.GetIds() when Ids slice is empty
🇨🇳 Chinese	修复 GeneralDelDto.GetIds() 在 Ids 为空时重复添加 Id 的问题

☑️ Self-Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript's definition is updated/provided or not needed
• Changelog is provided or not needed

[KiwiGaze]

@wenjianzhang Could you please review this fix? You authored the original code in common/dto/search.go. Thanks!