Clear session on impersonation exception

[erikn69]

When quietLogout doesn't exists, take returns false, but session keeps impersonated_by, this causes the app to behave as if it is being impersonated to another user when in reality that is not the case
When quietLogin doesn't exists, take returns false but current user already be logout, and no user is logged in

laravel-impersonate/src/Services/ImpersonateManager.php

Lines 116 to 125 in d8ab69f

	session()->put($this->getSessionKey(), $from->getAuthIdentifier());
	session()->put($this->getSessionGuard(), $currentGuard);
	session()->put($this->getSessionGuardUsing(), $guardName);
	$this->app['auth']->guard($currentGuard)->quietLogout();
	$this->app['auth']->guard($guardName)->quietLogin($to);
	} catch (\Exception $e) {
	unset($e);
	return false;

laravel-impersonate/src/Services/ImpersonateManager.php

Lines 65 to 68 in d8ab69f

	public function isImpersonating(): bool
	{
	return session()->has($this->getSessionKey());
	}