Use WebApplicationFactory as the base class for Web integration testing.

[maliming]

Resolve #17484

[codecov]

Codecov Report

Merging #17497 (16999d6) into dev (c17c4c2) will increase coverage by 0.03%.
Report is 16 commits behind head on dev.
The diff coverage is 36.89%.

@@            Coverage Diff             @@
##              dev   #17497      +/-   ##
==========================================
+ Coverage   53.28%   53.31%   +0.03%     
==========================================
  Files        3025     3026       +1     
  Lines       94376    94385       +9     
==========================================
+ Hits        50289    50325      +36     
+ Misses      44087    44060      -27     

Files Changed	Coverage Δ
...e/TestBase/AbpAspNetCoreAsyncIntegratedTestBase.cs	65.38% <ø> (ø)
...ing/AuditIntegrationServiceTestController_Tests.cs	0.00% <0.00%> (ø)
...pNetCore/Mvc/Auditing/AuditTestController_Tests.cs	0.00% <0.00%> (ø)
...Abp/AspNetCore/Mvc/Auditing/AuditTestPage_Tests.cs	0.00% <0.00%> (ø)
.../Mvc/Controllers/ReplaceBuiltInController_Tests.cs	0.00% <ø> (ø)
...g/AbpAuthorizationExceptionTestController_Tests.cs	0.00% <0.00%> (ø)
...andling/AbpAuthorizationExceptionTestPage_Tests.cs	0.00% <0.00%> (ø)
...ExceptionHandling/ExceptionTestController_Tests.cs	0.00% <0.00%> (ø)
...e/Mvc/ExceptionHandling/ExceptionTestPage_Tests.cs	0.00% <0.00%> (ø)
.../AspNetCore/Mvc/Json/JsonResultController_Tests.cs	0.00% <0.00%> (ø)
... and 14 more

... and 2 files with indirect coverage changes

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[hikalkan]

I marked as breaking change since we made obsolete the old class and we may remove it in the future. So, we should mention that in the migration guide for 8.0.