fix(lambda-at-edge): non-dynamic routes for rewrite should not includ…

[dphang]

…e routes in prerender manifest

• Prerender manifest routes just mean they are rendered at build time, not that they are non-dynamic. Tests on local Next.js dev server confirm they can be rewritten too.

[codecov]

Codecov Report

Merging #700 into master will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #700   +/-   ##
=======================================
  Coverage   80.18%   80.18%           
=======================================
  Files          54       54           
  Lines        1731     1731           
  Branches      366      366           
=======================================
  Hits         1388     1388           
  Misses        285      285           
  Partials       58       58           

Impacted Files	Coverage Δ
...ackages/libs/lambda-at-edge/src/default-handler.ts	95.31% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d10cc5c...67f5b19. Read the comment docs.