Remove WebAssembly endowment factory

[rekmarks]

Node landed WebAssembly.compileStreaming and instantiateStreaming in nodejs/node#42701 and made it available in Node 18, so we no longer need to exclude these properties from our WebAssembly endowment. This PR therefore removes the WebAssembly endowment factory, which will now be included in whatever form it exists on the execution environment root realm global.

[codecov-commenter]

Codecov Report

Merging #459 (02d8de5) into main (31e1556) will decrease coverage by 0.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #459      +/-   ##
==========================================
- Coverage   81.37%   81.28%   -0.10%     
==========================================
  Files          69       68       -1     
  Lines        2132     2121      -11     
  Branches      368      368              
==========================================
- Hits         1735     1724      -11     
  Misses        373      373              
  Partials       24       24              

Impacted Files	Coverage Δ
...cution-environments/src/common/endowments/index.ts	91.42% <100.00%> (-0.24%)	⬇️

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