Invalid default error should show up in the right location

[timotheeguerin]

model Foo<D> {
          ^ error here
  prop?: string = D;
               ^ should be here
}

https://cadlplayground.z22.web.core.windows.net/?c=bW9kZWwgRm9vPEQ%2BIHsKICBwcm9wPzogc3RyaW5nID0gRDsKfQ%3D%3D

[markcowl]

pri: 1
est: 3