[ADF-4936] Auth guard redirect fix (#5092)

* [ADF-4936] fix for auth guard with silent Login true

* [ADF-4936] check only for isOAuth...

* [ADF-4936] fix all auth guards when silent Login true

* [ADF-4936] unit tests

* [ADF-4936] fix doc info

* [ADF-4936] types and null checks

* [ADF-4936] fallback option in case silentLogin is missing from settings

* [ADF-4936] refactoring

* try to fix e2e test [C299158] Login component - SSO Grant type password (implicit flow false)

* Fix e2e test [C299158] Login component - SSO Grant type password (implicit flow false)

* [ADF-4936] show the error page when route path is unknown

* [ADF-4936] remove ssoImplicitLogin and do the redirectToUrl instead

-the implicit login concern is already in the JS-API

* [ADF-4936] refactor to simplify code

- the removed 'if' conditions cover all possible 'else' cases

* [ADF-4936] remove unneeded method

lib/core/services/auth-guard-base.ts

@@ -82,13 +82,13 @@ export abstract class AuthGuardBase implements CanActivate, CanActivateChild {
         );
     }
 
-    protected isOAuthWithoutSilentLogin() {
+    protected isOAuthWithoutSilentLogin(): boolean {
         const oauth = this.appConfigService.get<OauthConfigModel>(
             AppConfigValues.OAUTHCONFIG,
             null
         );
         return (
-            this.authenticationService.isOauth() && oauth.silentLogin === false
+            this.authenticationService.isOauth() && !!oauth && !oauth.silentLogin
         );
     }
 }