fix(vite): 深色模式的tabbar无法引用theme.json变量

[NiuGuohui]

这个 PR 做了什么？ (简要描述所做更改)

解决了微信小程序平台，深色模式适配下，tabbar中的icon无法引用theme.json变量的问题

这个 PR 是什么类型？ (至少选择一个)

• 错误修复 (Bugfix) issue: fix #
• 新功能 (Feature)
• 代码重构 (Refactor)
• TypeScript 类型定义修改 (Types)
• 文档修改 (Docs)
• 代码风格更新 (Code style update)
• 构建优化 (Chore)
• 其他，请描述 (Other, please describe):

这个 PR 涉及以下平台：

• 所有平台
• Web 端（H5）
• 移动端（React-Native）
• 鸿蒙（Harmony）
• 鸿蒙容器（Harmony Hybrid）
• ASCF 元服务
• 快应用（QuickApp）
• 所有小程序
• 微信小程序
• 企业微信小程序
• 京东小程序
• 百度小程序
• 支付宝小程序
• 支付宝 IOT 小程序
• 钉钉小程序
• QQ 小程序
• 飞书小程序
• 快手小程序
• 头条小程序

Summary by CodeRabbit

• Bug Fixes
  • 优化了标签栏图标路径的处理逻辑：当图标路径为空或为内部别名（以 @ 开头）时，跳过资源读取、发出和文件监视，避免对无效或内部引用执行不必要操作，降低构建开销并提高构建稳定性。

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 8f0868e7-4925-4aa6-9fb6-c69f26659036

📥 Commits

Reviewing files that changed from the base of the PR and between 795086b and ccc4b52.

📒 Files selected for processing (1)

• packages/taro-vite-runner/src/mini/entry.ts

✅ Files skipped from review due to trivial changes (1)

• packages/taro-vite-runner/src/mini/entry.ts

---

Walkthrough

在 tabBar 处理分支中新增守卫：当 iconPath 或 selectedIconPath 为假值或以 @ 开头时跳过处理，避免为内部/别名路径发射资产或添加文件监视。

Changes

Cohort / File(s)	Summary
Vite 运行器入口文件 packages/taro-vite-runner/src/mini/entry.ts	在 tabBar 图标路径处理中新增两处守卫检查：若 iconPath 或 selectedIconPath 为假值或以 @ 开头则跳过后续的资产发射（emitFile）与文件监视（addWatchFile）逻辑。

Estimated code review effort

🎯 2 (简单) | ⏱️ ~8 分钟

诗句

我是小兔来报到，🐰
两行守卫守路径，
碰到 '@' 就轻轻绕，
空值亦不去招摇，
构建安宁且欢笑 ～ ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	PR标题准确反映了主要修复内容：修复深色模式下tabbar无法引用theme.json变量的问题，与代码更改（对@开头的路径进行额外过滤）的目的相符。
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 56.07%. Comparing base (438bcb6) to head (b0734be).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #18789   +/-   ##
=======================================
  Coverage   56.07%   56.07%           
=======================================
  Files         447      447           
  Lines       23454    23454           
  Branches     5808     5792   -16     
=======================================
  Hits        13151    13151           
+ Misses       8449     8448    -1     
- Partials     1854     1855    +1     

Flag	Coverage Δ
taro-cli	72.85% <ø> (ø)
taro-runtime	58.33% <ø> (ø)
taro-web	53.12% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.
see 1 file with indirect coverage changes

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