Use user-defined menus in Blazor's LoginDisplay.

[maliming]

Fix #5970

InvokeVoidAsync caused an exception, and I did find a solution. ,

await JsRuntime.InvokeVoidAsync("open", uri, "_blank");

blazor.webassembly.js:1 Uncaught (in promise) TypeError: Converting circular structure to JSON
    --> starting at object with constructor 'Window'
    --- property 'window' closes the circle
    at JSON.stringify (<anonymous>)
    at blazor.webassembly.js:1

[hikalkan]

We should open the profile management page in the same window. So, don't use _blank. But I don't know why it didn't worked. Maybe await JsRuntime.InvokeVoidAsync("window.open", uri, "_blank"); would work.

[cotur]

@hikalkan yes we should open in same page.

Related issue.

dotnet/aspnetcore#16632 (comment)

This is because window.open returns a WindowProxy object (see https://developer.mozilla.org/en-US/docs/Web/API/Window/open). WindowProxy is not JSON-serializable, so can't be used as a return value to .NET code.

To fix this, don't call window.open directly, but instead call a JS function of your own that either returns nothing or returns something that is JSON-serializable.