!190 merge develop into develop
fix(opencode): 0-1skill优化：当sdk_pkg不存在时直接fallback
Created-by: gcw_pgjD5pS3
Commit-by: 马雪莹
Merged-by: openharmony_ci
Description: ### Issue for this PR
Closes [#131](https://gitcode.com/openharmony-sig/deveco-code/issues/131)
### Type of change
- [x] Bug fix
- [ ] New feature
- [ ] Refactor / code improvement
- [ ] Documentation
### What does this PR do?
0-1skill优化：当sdk_pkg不存在时直接fallback，并明确不再二次验证 SDK、猜测apiLevel或修改环境变量等操作。
**If you paste a large clearly AI generated description here your PR may be IGNORED or CLOSED!**
### How did you verify your code works?
去除了 sdk-pkg.json 缺 apiVersion 时回退查找 3 条 oh-uni-package.json 链路的冗余动作，直接 fallback 到 22。
### Screenshots / recordings
_If this is a UI change, please include a screenshot or recording._
### Checklist
- [x] I have tested my changes locally
- [x] I have not included unrelated changes in this PR
_If you do not follow this template your PR will be automatically rejected._
See merge request: openharmony-sig/deveco-code!190