Revert "Merge branch 'conditionally-render-create-project-button' into 'master'"

What does this MR do?

This MR reverts !64196 (merged) which caused SAML members of a group to be unable to create projects (since their personal project_limit is 0). This is because the can_create_project only looks at project_limit and not also namespace.kind == 'group' (see ref).