[wasm][http] Improve compatibility of abort and cancelation of BrowserHttpHandler

[pavelsavara]

• fixed handling of cancelation and abort exceptions to match unit test expectations
• for redirect outerloop tests added [wasm][http] broken redirect tests System.Net.Http.Functional.Tests.HttpClientHandler_RemoteServerTest #55083

Fixes#54270

[ghost]

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Issue Details

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• fixed handling of cancelation and abort exceptions to match unit test expectations
• for redirect outerloop tests added [wasm][http] broken redirect tests System.Net.Http.Functional.Tests.HttpClientHandler_RemoteServerTest #55083

Fixes #54270

Author:	pavelsavara
Assignees:	-
Labels:	area-System.Net.Http
Milestone:	-

[ManickaP]

LGTM, I'm not a browser handler expert though.

[marek-safar]

Is this ready for merge?

[lewing]

Failing test in runtime (Libraries Test Run release mono Linux x64 Debug) is

 Starting: System.Threading.Tests (parallel test collections = on, max threads = 2)
System.Threading.Tests.ThreadLocalTests.RunThreadLocalTest8_Values_NegativeCases [SKIP]
Condition(s) not met: "IsPreciseGcSupported"
System.Threading.Tests.ThreadLocalTests.RunThreadLocalTest5_Dispose [FAIL]
Assert.True() Failure
Expected: True
Actual: False
Stack Trace:
/_/src/libraries/System.Threading/tests/ThreadLocalTests.cs(139,0): at System.Threading.Tests.ThreadLocalTests.RunThreadLocalTest5_Dispose()
/_/src/mono/System.Private.CoreLib/src/System/Reflection/RuntimeMethodInfo.cs(370,0): at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

It isn't related to to a browser only change.