Rework encodeDisallowedCharacters function for OpenAPI 3.x request builders

[glowcloud]

encodeDisallowedCharacters function

swagger-js/src/execute/oas3/style-serializer.js

Line 5 in f327d4b

export function encodeDisallowedCharacters(str, { escape } = {}, parse) {

contains logic that should be moved out of it - the function should only encode characters.
We can move the logic for converting numbers to strings and returning empty strings or non-string type values to the valueEncoder function. It should take care of converting all values to strings as it does now for objects and arrays.

swagger-js/src/execute/oas3/style-serializer.js

Line 59 in f327d4b

export function valueEncoder(value, escape) {

We can also remove the parse parameter as it is not used anywhere.

The signature of the function should be encodeCharacters(str, { characterSet = 'reserved' } = {} and the logic for returning non-encoded strings for when the escape value is set to false should also be moved to valueEncoder.

[char0n]

Addressed in #3463