[Angular] Language is not preserved when navigating to another page

[illiakovalenko]

Description / Motivation

1. Create new jss app for selected framework (angular in this case): 'jss create angular-app angular --fetchWith REST -b release/18.0.0'
2. Create API KEY in the Sitecore instance
3. Run 'jss setup' to confogure app
4. Deploy configs to the Sitecore instance
5. Add da-DK language to the Sitecore instance
6. Deploy items for en and da-DK languages: 'jss deploy items -c -d', 'jss deploy items -c -d language da-DK'
7. Deploy app: jss deploy app -c -d
8. Run command: jss start:connected
9. Open page: http://localhost:3000/styleguide
10. Click 'Show in Danish' link
11. Click 'GraphQL' link in the header

AR: 'GraphQL' page is opened in english language
ER: 'GraphQL' page is opened in danish language (empty page should be shown in our case since we don't have english version for it)

Testing Details

• CSR
• SSR

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update (non-breaking change; modified files are limited to the /docs directory)

[vercel]

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🔍 Inspect: https://vercel.com/sitecore-jss/edge-e2e-styleguide/DDAMCGDZoXdyUNP4JkJWArpcVPzN
✅ Preview: https://edge-e2e-styleguide-git-feature-485363-sitecore-jss.vercel.app

[CobyPear]

Looks good to me besides a few comments.