[py]: Additional types for element fetching methods

[symonk]

Add additional types in some places that fetch elements
removed unnecessary __ne__ implementation.

WebElement & ShadowRoot have a circular dependency, will address that one in future.

[codecov-commenter]

Codecov Report

Merging #10662 (3aa9573) into trunk (97aeedb) will increase coverage by 0.06%.
The diff coverage is 33.33%.

@@            Coverage Diff             @@
##            trunk   #10662      +/-   ##
==========================================
+ Coverage   45.60%   45.67%   +0.06%     
==========================================
  Files          86       86              
  Lines        5741     5741              
  Branches      274      274              
==========================================
+ Hits         2618     2622       +4     
+ Misses       2849     2845       -4     
  Partials      274      274              

Impacted Files	Coverage Δ
...lenium/webdriver/support/event_firing_webdriver.py	12.55% <20.00%> (+0.39%)	⬆️
py/selenium/webdriver/remote/webelement.py	30.11% <33.33%> (+0.65%)	⬆️
py/selenium/webdriver/remote/shadowroot.py	60.00% <100.00%> (+4.68%)	⬆️

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