fix: fatal error when current JS is not inside script tag

[misak113]

• for example when html-webpack-inline-source-plugin is used, the JS is inlined in HTML in script tag. So in this case document.currentScript.getAttribute('src') is undefined
• undefined cannot be used as string with method replace. This cause a fatal error and crash app

• This is a bugfix
• This is a feature
• This is a code refactor
• This is a test update
• This is a docs update
• This is a metadata update

For Bugs and Features; did you add new tests?

Motivation / Use-Case

Breaking Changes

Additional Info

[jsf-clabot]

All committers have signed the CLA.

[alexander-akait]

Need tests

[misak113]

Hi, I'm sorry for failing PR, but I added a special case to tests, where getCurrentScriptSource returns undefined. So it could be enough for test coverage. It's exactly the value, which would have been failing tests when my change is not applied.
b488304#diff-2ee53e81db4e6170cf44cc607e849f1aR17

[alexander-akait]

We need fix CI error

[codecov]

Codecov Report

Merging #2229 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master   #2229      +/-   ##
=========================================
+ Coverage   93.89%   93.9%   +<.01%     
=========================================
  Files          34      34              
  Lines        1278    1279       +1     
  Branches      366     367       +1     
=========================================
+ Hits         1200    1201       +1     
  Misses         71      71              
  Partials        7       7

Impacted Files	Coverage Δ
client-src/default/utils/createSocketUrl.js	100% <100%> (ø)	⬆️

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[codecov]

Codecov Report

Merging #2229 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master   #2229      +/-   ##
=========================================
+ Coverage   93.89%   93.9%   +<.01%     
=========================================
  Files          34      34              
  Lines        1278    1279       +1     
  Branches      366     367       +1     
=========================================
+ Hits         1200    1201       +1     
  Misses         71      71              
  Partials        7       7

Impacted Files	Coverage Δ
client-src/default/utils/createSocketUrl.js	100% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[knagaitsev]

Closing in favor of #2246