fix: make inline workers work from IE/Edge legacy

[elasim]

This PR contains a:

• [x] bugfix
• [ ] new feature
• [ ] code refactor
• [ ] test update
• [ ] typo fix
• [ ] metadata update

Motivation / Use-Case

• Fix inline worker to work on IE11 and Edge legacy.
• This PR will resolve an issue #292.

Breaking Changes

No breaking changes.

Additional Info

N/A

[codecov[bot]]

Codecov Report

Merging #316 (3b1e9d2) into master (22275e9) will decrease coverage by 22.19%. The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           master     #316       +/-   ##
===========================================
- Coverage   75.83%   53.64%   -22.20%     
===========================================
  Files           6        6               
  Lines         149      151        +2     
  Branches       52       53        +1     
===========================================
- Hits          113       81       -32     
- Misses         30       54       +24     
- Partials        6       16       +10     

Impacted Files	Coverage Δ
src/runtime/inline.js	0.00% <0.00%> (ø)
src/supportWebpack5.js	0.00% <0.00%> (-83.34%)	:arrow_down:
src/index.js	82.50% <0.00%> (-12.50%)	:arrow_down:
src/utils.js	81.57% <0.00%> (-5.27%)	:arrow_down:

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[alexander-akait]

Can you accept CLA?

[elasim]

Okay. I accepted CLA.

[alexander-akait]

I will fix tests tomorrow and do release

[elasim]

Good. Thanks for your efforts.

[elasim]

I've found a minor glitch for this approach.

https://github.com/webpack-contrib/worker-loader/issues/292#issuecomment-839061164