fix: state should not be a required field in oidc

internal/controller/oidc_controller.go

@@ -24,7 +24,7 @@ type OIDCController struct {
 
 type AuthorizeCallback struct {
 	Code  string `url:"code"`
-	State string `url:"state"`
+	State string `url:"state,omitempty"`
 }
 
 type TokenRequest struct {

internal/service/oidc_service.go

@@ -79,7 +79,7 @@ type AuthorizeRequest struct {
 	ResponseType string `json:"response_type" binding:"required"`
 	ClientID     string `json:"client_id" binding:"required"`
 	RedirectURI  string `json:"redirect_uri" binding:"required"`
-	State        string `json:"state" binding:"required"`
+	State        string `json:"state"`
 	Nonce        string `json:"nonce"`
 }