MudSelect: Fix ResetAsync

[Anu6is]

Description

Calling ResetAsync on MudSelect clears the Value but does not clear the SelectedValues collection.

This change overrides the base ResetValueAsync and ensure that the SelectedValues collection is cleared.

Additionally, I took the opportunity to rename the Clear method to ClearAsync. The existing Clear method has been marked as obsolete so as not to introduce a breaking change.

Resolves: #2092

How Has This Been Tested?

Visual and unit tests

Type 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)
• Documentation (fix or improvement to the website or code docs)

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 ✅

Project coverage is 91.86%. Comparing base (d9e44c6) to head (be7742f).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev   #10828   +/-   ##
=======================================
  Coverage   91.86%   91.86%           
=======================================
  Files         427      427           
  Lines       13446    13446           
  Branches     2595     2595           
=======================================
  Hits        12352    12352           
  Misses        523      523           
  Partials      571      571           

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[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud