Show actual incorrect constant rather than "const must be equal to constant"

[kellyselden]

I know we are using the raw message and just passing it along:

engines: {
  type: 'object',
  properties: {
    node: {
      const: '>=18.12.0',
    },
  },
  required: ['node'],
},

  33 |   "engines": {
> 34 |     "node": ">=18.12.1"
     |             ^^^^^^^^^^^ 👈🏽  const must be equal to constant
  35 |   },

but I wonder if we could do better. We already know the constant value from the schema, could we not include that in the error message? Or is that outside the scope of this project?