fix(app.ts): defineApp undefined

[fz6m]

在 #10412 发现了更多循环依赖问题，其中 defineApp 在 max 中 app.ts 使用会崩溃 undefined ，所以把 #9708 这个 PR 一部分致命的问题先拆出来解掉。

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1 Ignored Deployment

Name	Status	Preview	Comments	Updated
umi	⬜️ Ignored (Inspect)			Feb 6, 2023 at 5:04PM (UTC)

[codecov]

Codecov Report

Base: 29.26% // Head: 29.34% // Increases project coverage by +0.07% 🎉

Coverage data is based on head (1d4eb62) compared to base (0c568fa).
Patch coverage: 20.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #10436      +/-   ##
==========================================
+ Coverage   29.26%   29.34%   +0.07%     
==========================================
  Files         445      445              
  Lines       13041    12980      -61     
  Branches     3186     3056     -130     
==========================================
- Hits         3817     3809       -8     
+ Misses       8615     8533      -82     
- Partials      609      638      +29     

Impacted Files	Coverage Δ
...kages/preset-umi/src/features/tmpFiles/tmpFiles.ts	0.00% <0.00%> (ø)
packages/testing/src/index.ts	0.00% <0.00%> (ø)
packages/umi/src/test.ts	47.22% <50.00%> (+0.16%)	⬆️
...ages/bundler-webpack/src/config/javaScriptRules.ts	74.24% <0.00%> (-0.05%)	⬇️
packages/mfsu/src/moduleGraph.ts	99.28% <0.00%> (-0.01%)	⬇️
codemod/src/checker.ts	0.00% <0.00%> (ø)
packages/server/src/ssr.ts	0.00% <0.00%> (ø)
codemod/src/appJSUpdater.ts	0.00% <0.00%> (ø)
packages/umi/src/cli/cli.ts	0.00% <0.00%> (ø)
codemod/src/runner/config.ts	0.00% <0.00%> (ø)
... and 45 more

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