fix(module:core): resolve CSP errors

[arturovt]

The ConfigService needs to insert a style tag when registering theme. These changes use the new CSP_NONCE token to avoid CSP issues.

Closes #7644

[codecov]

Codecov Report

Merging #8059 (c798a88) into master (7f7c155) will increase coverage by 0.00%.
The diff coverage is 76.92%.

❗ Current head c798a88 differs from pull request most recent head 494b959. Consider uploading reports for the commit 494b959 to get more accurate results

@@           Coverage Diff           @@
##           master    #8059   +/-   ##
=======================================
  Coverage   91.64%   91.65%           
=======================================
  Files         515      515           
  Lines       17640    17645    +5     
  Branches     2790     2791    +1     
=======================================
+ Hits        16167    16172    +5     
  Misses       1175     1175           
  Partials      298      298           

Files Changed	Coverage Δ
components/core/util/dynamic-css.ts	72.00% <64.28%> (ø)
components/core/wave/nz-wave-renderer.ts	95.94% <75.00%> (-1.24%)	⬇️
components/core/config/config.service.ts	100.00% <100.00%> (ø)
components/core/config/css-variables.ts	87.23% <100.00%> (ø)
components/core/wave/nz-wave.directive.ts	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes