fix consecutive narrow inference, nested pipes

[ssalbdivad]

• Fix a crash when piping to nested paths (see Error transforming object: Cannot read properties of undefined #968)
• Fix inferred input type of .narrow (see Cannot use narrow before pipe #969)
• Throw on a pipe between disjoint types, e.g.:

// Now correctly throws ParseError: Intersection of <3 and >5 results in an unsatisfiable type
const t = type("number>5").pipe(type("number<3"))

// Previously returned a Disjoint object

• Mention the actual value when describing an intersection error:

const evenGreaterThan5 = type({ value: "number%2>5" })
const out = evenGreaterThan5(3)
if (out instanceof type.errors) {
	/*
    value 3 must be...
      • a multiple of 2
      • at most 5
    */
	console.log(out.summary)
}

// was previously "value must be..."

Thanks @TizzySaurus for reporting the last two on our Discord!