Fix 2FA endpoints

[ezhevita]

Checklist

• I read and understood the Contributing Guidelines.
• This is not a duplicate of an existing merge request.
• I believe this falls into the scope of the project and should be part of the built-in functionality.
• My code follows the code style of this project.
• I have added tests to cover my changes, wherever they are necessary.
• All new and existing tests pass.

Changes

New functionality

None.

Changed functionality

Fixed getting 2FA confirmations (resolves #2920)

Removed functionality

None.

Additional info

thanks steam very cool
TODO: add session update if needauth

[ezhevita]

ArchiSteamFarm/ArchiSteamFarm/Steam/Integration/ArchiWebHandler.cs

Lines 1883 to 1890 in 782b72e

	// Confirmations page is notorious for freezing, not returning confirmations and other issues
	// It's unknown what exactly causes those problems, but restart of the bot fixes those in almost all cases
	// Normally this wouldn't make any sense, but let's ensure that we've refreshed our session recently as a possible workaround
	if (DateTime.UtcNow - SessionValidUntil > TimeSpan.FromMinutes(5)) {
	if (!await RefreshSession().ConfigureAwait(false)) {
	return null;
	}
	}

also this may not be needed anymore, there is a glimmer of hope they finally fixed this

[JustArchi]

@ezhevita Thanks a lot for doing the hard part and sending PR, your support and help is priceless! 🏆