Ensure computed property names are always checked

[weswigham]

Fixes #37262

[weswigham]

@sandersn the early bail code for object spread -

                    if (!isValidSpreadType(type)) {
                        error(memberDecl, Diagnostics.Spread_types_may_only_be_created_from_object_types);
                        return errorType;
                    }

may also be blocking other aspects of object literal checking. Would it make sense to remove the bail?

[sandersn]

Current change looks fine, but you're right -- it would be better to not bail on invalid spread types.