Handle unsupported locale also change global locale

[hxltinh]

Describe the bug

import dayjs from 'dayjs';
import 'dayjs/locale/fr';
import 'dayjs/locale/es';

dayjs.locale('fr');

setTimeout(() => {
  const globalLanguage = dayjs.locale();
  console.log('1 language', globalLanguage);
}, 1000);

setTimeout(() => {
  const localTranslate = dayjs().locale('es-es').locale();
  console.log('2 language', localTranslate);
}, 3000);

setTimeout(() => {
  const globalLanguage = dayjs.locale();
  console.log('3 language', globalLanguage);
}, 5000);

result:
1 language fr
2 language es
3 language es

if we change from es-es to en-us it would behave similar... both es-es and en-us are not supported by dayjs and they force global locale to be changed

Expected behavior
It should not change the global locale when handle unsupported local locale

Information

• Day.js Version [e.g. v1.11.0, v1.11.1]
• OS: Window and Mac OS
• Browser: Chrome version 100.0.4896.127
• Time zone: GMT+7 Indochina Time

[barisbikmaz]

Seems to be a regression. This was working on version 1.10.8

[barisbikmaz]

Seems like this bug happened with this PR: #1524 .
On line 25 there is a recursive return statement where you do not pass the other arguments. Then the language is set globally.