Name of function Intl.getCanonicalLocales is incorrectly CanonicalizeLocaleList -- should be hidden.

[dilijev]

print(Intl.DateTimeFormat.supportedLocalesOf);
print(Intl.getCanonicalLocales);

function() {
    [native code]
}
function CanonicalizeLocaleList() { [native code] }

Should do something similar here to hide name of the implementing function as we did for supportedLocalesOf.

[dilijev]

See https://tc39.github.io/Function-prototype-toString-revision/#sec-function.prototype.tostring for a revision to the relevant spec text.

The gist is: in both old and new spec text, the function name is optional. Old: name can be anything. New: if included, the name must match the actual name of the function. The following two options (and variations of whitespace therein) are allowed:

function() {
    [native code]
}

function name() {
    [native code]
}

For consistency, will make Intl.getCanonicalLocales output match the pattern of toString from other built-in functions.

/cc @bterlson

[dilijev]

> eshost -h d8,node,sm,jsc,ch-master -its test.js
## Source
print('' + Intl.DateTimeFormat.supportedLocalesOf);

┌───────────┬─────────────────────────────────────────────────┐
│ d8        │ function supportedLocalesOf() { [native code] } │
│ node      │                                                 │
├───────────┼─────────────────────────────────────────────────┤
│ jsc       │ function supportedLocalesOf() {                 │
│ sm        │     [native code]                               │
│           │ }                                               │
├───────────┼─────────────────────────────────────────────────┤
│ ch-master │ function() {                                    │
│           │     [native code]                               │
│           │ }                                               │
└───────────┴─────────────────────────────────────────────────┘

[dilijev]

Related bug: Intl.getCanonicalLocales.name must be getCanonicalLocales.