fix: hash generation with inline syntax

[alexander-akait]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

fixes #1384

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

Base: 96.81% // Head: 96.82% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (06f12ef) compared to base (7c5cdcc).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1480   +/-   ##
=======================================
  Coverage   96.81%   96.82%           
=======================================
  Files          12       12           
  Lines        1131     1133    +2     
  Branches      411      412    +1     
=======================================
+ Hits         1095     1097    +2     
  Misses         27       27           
  Partials        9        9           

Impacted Files	Coverage Δ
src/utils.js	94.74% <100.00%> (+0.01%)	⬆️

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[cherepanov]

I see regression on one of our project since version 6.7.2
In combination with style-loader class name hash mismatches with html.

.close___b9e73c8a63cb4434d320 vs close___defedee1e4d1a20dcfb3

Really nothing special in config.
Very confused because all apps use the same build config, but only one of them is affected.

Maybe related to SSR

Rollback to 6.7.1 solves issue

[alexander-akait]

@cherepanov Can you provide example? Do you mean you classes are overllaping or just changed?