MudMenuItem: Don't "click" when scrolling menu on touch devices (#7262)

[ilovepilav]

Description

This PR solves the issue which touchscreen users cannot scroll MudMenu without invoking OnTouchHandler
Resolves #7262

Added a private boolean "_isTouchMoved" to the MudMenuItem which only true when ontouchmove for stopping OnTouchHandler invoke.

Touch events always start with ontouchstart so we're making "_isTouchMoved" false back when ontouchstart.

MudMenuItem's OnTouchHandler already binded to ontouchend event so it always works when the user just touches.

ontouchstart + ontouchmove + ontouchend(OnTouchHandler called) => ❌

ontouchstart + ontouchend(OnTouchHandler called) => ✅

How Has This Been Tested?

• Added 2 unit tests.
• All tests passed.
• Tested the view(MenuItemActionTest) on mobile and browser's developer tool responsive view
• Locally tested scrolling on mobile, didn't add another testing view for it, since they have same functionality with MenuItemActionTest view

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Before.MP4

After_Fix.MP4

Menu_Scroll_Test_After_Fix.MP4

Checklist:

• The PR is submitted to the correct branch (dev).
• My code follows the code style of this project.
• I've added relevant tests.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c1aada9) 87.18% compared to head (f584706) 87.19%.
Report is 2 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #7809   +/-   ##
=======================================
  Coverage   87.18%   87.19%           
=======================================
  Files         389      389           
  Lines       11419    11421    +2     
  Branches     2299     2299           
=======================================
+ Hits         9956     9958    +2     
  Misses        966      966           
  Partials      497      497           

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[henon]

Thanks @ilovepilav for fixing this bug!