Fix theme-toggle/anti-flash mismatch, Norwegian BCP-47 lang tag, and inline script CSP exposure#829

pethers merged 2 commits intomain-7a9239b964b147d1Hack23/riksdagsmonitor:main-7a9239b964b147d1from

copilot/sub-pr-817Hack23/riksdagsmonitor:copilot/sub-pr-817Copy head branch name to clipboard