Update locale in all view routing hooks

[mportiz08]

Bug/issue #, if applicable: 160500944

Summary

Previously, the locale was only being updated in routing hooks for documentation pages. This should be done for all view components to ensure that the appropriate locale metadata is updated and tracked, regardless of how a page is entered (directly loading a URL or clicking through links between pages).

Testing

Steps:

1. Try to open a URL containing localized tutorial content (or other non-doc pages), like http://localhost:8080/ja-JP/tutorials/example
2. Verify that hardcoded UI strings are presented in the appropriate language

Checklist

Make sure you check off the following items. If they cannot be completed, provide a reason.

• Added tests
• Ran npm test, and it succeeded
• Updated documentation if necessary

[marinaaisa]

Tested and it looks great, thanks!
I rebased this branch to test with the latest changes introduced in the router.

[mportiz08]

@swift-ci test