Skip AWS SSO Registration Prompt if Already Set Up

[Sunil-Bista]

Update the tool to automatically skip the SSO registration step during setup if it's already been configured, to avoid asking the user again unnecessarily.

[sanjog-lama]

@Sunil-Bista,

I have included the fix of above issue by removing the sso registration scope on below PR.
#105

[lkkande-BB]

@sanjog-lama Verified and working as expected.