fix: use worker from plugin and remove default

[anshumanv]

What kind of change does this PR introduce?
chore

Did you add tests for your changes?
yes

If relevant, did you update the documentation?
yes

Summary

• removes default sw which is no longer used, instead we injest sw using workbox plugin in webpack build chain

Does this PR introduce a breaking change?
no

Other information
no

[codecov]

Codecov Report

Merging #2340 (6d71a3c) into master (ffc93e5) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2340   +/-   ##
=======================================
  Coverage   68.19%   68.19%           
=======================================
  Files          51       51           
  Lines        2053     2053           
  Branches      506      506           
=======================================
  Hits         1400     1400           
  Misses        653      653           

Impacted Files	Coverage Δ
packages/generators/src/init-generator.ts	90.00% <ø> (ø)

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