Template member access allow access to late bound properties

While it works in some cases it errors with circular issues with very confusing error. And as we don't allow it for non template constraint this feels inconsitent. We should revert that for now until we figure out that solution globally

[Playground Link](https://cadlplayground.z22.web.core.windows.net/?e=%40typespec%2Fopenapi3&c=bmFtZXNwYWNlIFRlc3Q7Cgptb2RlbCBSZWZsZWN0PFQ%2BIHsKICAuLi5UOwp9yB5NxAZQcm9wZXJ0eQogIGlzyTHELiAgxFY6IHN0cmluZzvFEnQ6IFRlbXBsYXRlxyTUJn0%2BxAjEBsdqyTRUIGV4dGVuZHPOfeYAn2E6IFQuxE7lAKQvLyBhbGlhcyBBID3OLsck&options=%7B%7D&vs=%7B%7D)