[wasm][http] response.ReasonPhrase is wrong

[pavelsavara]

In unit test System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.GetAsync_CallMethod_ExpectedStatusLine on Browser

Assert.Equal() Failure
Expected: Custom description
Actual:   Method Not Allowed
   at System.Net.Http.Functional.Tests.HttpClientHandlerTest.<>c__DisplayClass41_0.<<GetAsync_CallMethod_ExpectedStatusLine>b__0>d.MoveNext() in C:\Dev\runtime\src\libraries\Common\tests\System\Net\Http\HttpClientHandlerTest.cs:line 1718

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Issue Details

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In unit test System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandlerTest.GetAsync_CallMethod_ExpectedStatusLine on Browser

Assert.Equal() Failure
Expected: Custom description
Actual:   Method Not Allowed
   at System.Net.Http.Functional.Tests.HttpClientHandlerTest.<>c__DisplayClass41_0.<<GetAsync_CallMethod_ExpectedStatusLine>b__0>d.MoveNext() in C:\Dev\runtime\src\libraries\Common\tests\System\Net\Http\HttpClientHandlerTest.cs:line 1718

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