appview/oauth: overload oauth identity directory

we invalidate resolutions in our ingester, but the oauth SDK seems to
bring its own directory! this changeset shares them instead.

thanks to nel.pet <did:plc:h5wsnqetncv6lu2weom35lg2> for the hint.

Signed-off-by: oppiliappan <[e-mail]>

appview/oauth/oauth.go

···
 
 	sessStore := sessions.NewCookieStore([]byte(config.Core.CookieSecret))
 
+	clientApp := oauth.NewClientApp(&oauthConfig, authStore)
+	clientApp.Dir = res.Directory()
+
 	return &OAuth{
-		ClientApp:  oauth.NewClientApp(&oauthConfig, authStore),
+		ClientApp:  clientApp,
 		Config:     config,
 		SessStore:  sessStore,
 		JwksUri:    jwksUri,