airframe-surface: Avoid recursive update of surface cache

[xerial]

An alternative approach for #2260 as concurrent creation of the same Surface type should not be a big issue.

[codecov]

Codecov Report

Merging #2261 (fc1e0cb) into master (1329010) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2261      +/-   ##
==========================================
- Coverage   82.60%   82.58%   -0.02%     
==========================================
  Files         315      315              
  Lines       12440    12440              
  Branches      797      792       -5     
==========================================
- Hits        10276    10274       -2     
- Misses       2164     2166       +2     

Impacted Files	Coverage Δ
...c/main/scala/wvlet/airframe/surface/Surfaces.scala	85.71% <0.00%> (-2.68%)	⬇️
...rx/src/main/scala/wvlet/airframe/rx/RxRunner.scala	94.73% <0.00%> (+0.43%)	⬆️

---

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 40500b3...fc1e0cb. Read the comment docs.