Binding an object with x-transition helpers (no expression) does not work with boolean

[ekwoka]

When binding an object that uses no expression transition helpers x-transition, it's required to put '' as the value on the key.

using true causes a failure, resulting in true being passed for the modifiers and the original x-bind expression being passed through.

I feel that true should work the same as an empty string, as it's the more common way to define a key as being present in object notations.

<div x-bind="{ ['x-transition.opacity']: true }">