Make event dispatcher in View and WebView optional

[vjik]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks BC?	❌
Fixed issues	-

[what-the-diff]

PR Summary

• Update to CHANGELOG
  A new entry has been added to the document that tracks the changes made across different versions of the software.

• Changes in View.php
  This update allows the system used for managing events to be optional. It includes modifications to ensure that the system functions smoothly even when this component is not provided.

• Adjustments in ViewTrait.php
  The system is now more lenient when the event manager isn't available, with new safeguards to prevent it from trying to manage events in such cases.

• Updates to WebView.php
  Like with View.php, the event manager here is also optional. The same precautions have been implemented to prevent the system from managing events when it's not available.

• Modifications in TestHelper.php
  There's no longer a need to import an additional component for managing events. The changes also allow the event manager to be provided as-is during testing, without requiring an instance of the once imported component.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.26%. Comparing base (6ab2c25) to head (63e16eb).

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #250      +/-   ##
============================================
- Coverage     99.75%   99.26%   -0.50%     
- Complexity      305      307       +2     
============================================
  Files            19       19              
  Lines           807      811       +4     
============================================
  Hits            805      805              
- Misses            2        6       +4     

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