fix: dts may lost if another dts has error in last time

[PeachScript]

修复前序 d.ts 编译失败时部分 d.ts 丢失的问题。

原因是 father 启用了 ts 的 incremental 特性，它会自动增量编译文件，即便前序 d.ts 编译时部分源代码的类型有误，在第二次编译时它也会尽可能少地重新编译文件；father 会用持久缓存对这些不再重复编译的 d.ts 做补齐，但缓存写入逻辑仅在不存在类型诊断错误时才会执行，和 ts 的 incremental 行为不一致，最终导致产物中丢失部分 d.ts 文件。

解法是把写缓存的逻辑提前到检查类型诊断错误之前，无论如何都写入缓存。

cc @zombieJ

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (b8a7a79) 94.39% compared to head (4f11e18) 94.39%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #717   +/-   ##
=======================================
  Coverage   94.39%   94.39%           
=======================================
  Files          55       55           
  Lines        1551     1551           
  Branches      369      367    -2     
=======================================
  Hits         1464     1464           
+ Misses         87       82    -5     
- Partials        0        5    +5     

Files Changed	Coverage Δ
src/builder/bundless/dts/index.ts	98.63% <100.00%> (ø)

... and 2 files with indirect coverage changes

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