[blazor] Remove reference to BINDING api in global namespace

[maraf]

The blazor hotreload feature expects BINDING api to be exported to global namespace in the https://github.com/dotnet/sdk/blob/main/src/BuiltInTools/BrowserRefresh/BlazorHotReload.js.

The #46693 rewrote the invoke as a JSImport and with that we can call directly the async function receiveHotReloadAsync.

With the resolution of this issue we can remove disableDotnet6Compatibility: false from https://github.com/maraf/aspnetcore/blob/99a1d2c0cb39cbddb0e771d76c15fa96cae46261/src/Components/Web.JS/src/Platform/Mono/MonoPlatform.ts#L347

[maraf]

/cc @MackinnonBuck @pavelsavara

[pavelsavara]

disableDotnet6Compatibility: false is there also for 3rd party code which uses those global objects.
Let's flip it together with legacy interop when we link it out by default in the next major version (Net9).

[pavelsavara]

I agree that hotreload should be simplified.

[mkArtakMSFT]

@maraf is this something you plan to take care of?

[mkArtakMSFT]

@maraf based on our current understanding it seems it's ok to leave this to preview5 and nothing will break in preview4 because of this. Can you please confirm this is correct?

[pavelsavara]

Confirmed, this is not necessary to be fixed in preview4.