fix(webpack): font-family hex issue

[farnabaz]

Preserve quotes in font values to prevent Hex conversion by clean-css.
Close #6306

Types of changes

• [X ] Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly. (PR: #)
• I have added tests to cover my changes (if not applicable, please state why)
• All new and existing tests are passing.

[codecov-commenter]

Codecov Report

Merging #7763 into dev will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##              dev    #7763   +/-   ##
=======================================
  Coverage   68.83%   68.83%           
=======================================
  Files          90       90           
  Lines        3821     3821           
  Branches     1034     1034           
=======================================
  Hits         2630     2630           
  Misses        968      968           
  Partials      223      223           

Flag	Coverage Δ
#unittests	68.83% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/webpack/src/utils/postcss.js	84.52% <100.00%> (ø)

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[manniL]

Oh, very nice! 👍
Maybe it is worth adding a small test for it? 🤔

[pi0]

Perfect!

[pi0]

@farnabaz Would be nice if we can also have a test for it indeed. Merged to include in 2.14 (tomorrow)