feat(full-page-error): adds web component example

[AlexanderMelox]

Closes #6931

Adds Full page error web component stackblitz example

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.78%. Comparing base (892dc11) to head (2a4b837).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7177   +/-   ##
=======================================
  Coverage   81.78%   81.78%           
=======================================
  Files         399      399           
  Lines       12981    12981           
  Branches     4277     4277           
=======================================
  Hits        10616    10616           
  Misses       2365     2365           

Components	Coverage Δ
ibm-products	∅ <ø> (∅)
ibm-products-web-components	∅ <ø> (∅)

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