MudDataGrid: Rename AddFilterAsync and ClearFiltersAsync (Breaking Change)

[ScarletKuro]

Description

This PR #6627 introduced AndForget() calls in the public API, which we consider to be risky. As a result, we have decided to modify the public API and replace the AndForget() calls with async versions that will use await. Furthermore, since DataGrid generally has an async nature, this change makes sense.

How Has This Been Tested?

Unit test + docs

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)

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

Patch coverage: 53.65% and project coverage change: +0.15 🎉

Comparison is base (1a662ed) 90.48% compared to head (8377240) 90.64%.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #6639      +/-   ##
==========================================
+ Coverage   90.48%   90.64%   +0.15%     
==========================================
  Files         399      399              
  Lines       13617    13610       -7     
==========================================
+ Hits        12322    12337      +15     
+ Misses       1295     1273      -22     

Impacted Files	Coverage Δ
src/MudBlazor/Components/DataGrid/Filter.cs	77.96% <0.00%> (ø)
...dBlazor/Components/DataGrid/FilterHeaderCell.razor	37.50% <0.00%> (ø)
src/MudBlazor/Components/DataGrid/HeaderCell.razor	89.65% <ø> (ø)
...rc/MudBlazor/Components/DataGrid/MudDataGrid.razor	88.33% <ø> (ø)
src/MudBlazor/Components/DataGrid/FilterContext.cs	54.54% <25.00%> (-16.89%)	⬇️
...azor/Components/DataGrid/FilterHeaderCell.razor.cs	42.85% <45.45%> (+13.94%)	⬆️
.../MudBlazor/Components/DataGrid/HeaderCell.razor.cs	71.92% <53.84%> (+3.44%)	⬆️
...MudBlazor/Components/DataGrid/MudDataGrid.razor.cs	91.14% <81.81%> (+1.00%)	⬆️

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