Disable idp-initiated SSO at external saml idp

I was able to add an external saml idp to my Okta.
I can trigger the sign-in flow from my app side using /authorize url.
However, when I tried to perform idp-initiated at external saml idp I was redirected to Okta’s application selection page.
Is there anyway to disable that application selection page? If it was not possible, can we redirect to custom page?
Is there any option so Okta will reject idp-init sso from external idp ?


Could you try and see if this setting will work for you?