Missing IdentityProviderConfiguration for Existing Workspaces

[akafazov]

When running a newer version of the operator on an older environment, migration fails because IdentityProviderConfiguration resources don't exist. These resources are created during workspace initialization via IDPSubroutine, but workspaces created before this feature was implemented are already initialized. This leads missing IdP configurationn and users unable to login into previously created organizations.

refers to platform-mesh/backlog#150

[OlegErshov]

I think this problem will be covered when this PR is merged #246. It will add a controller which reconciles already initialized logical clusters and applies the same logic as initializer does. There's also an issue regarding this behavior #175

[akafazov]

Thanks, closing this due to duplication.