As the title suggests, am I required to list my app on the Shopify app store if I only want to kick off the OAuth process within my app using a client credentials workflow?

I have a few questions regarding setting up the OAuth flow, mainly about step 2 and 3 here (https://shopify.dev/apps/auth/oauth/getting-started#step-2-verify-the-installation-request). For step 2, when I test my app on the development store by instal...