makeEGetProxyHandler = (x, HandledPromise) =>
  harden({
    ...baseFreezableProxyHandler,
    has: (_target, _prop) => true,
    get: (_target, prop) => HandledPromise.get(x, prop),
  })
A Proxy handler for E.get(x)
It is a variant on the E(x) Proxy handler.

@param {any} x Any value passed to E.get(x)
@param {HandledPromiseConstructor} HandledPromise
@returns {ProxyHandler<unknown>} the Proxy handler