fix: Restore missing translation keys

[xingyaoww]

Description

This PR restores several translation keys that were present in commit 92b8d55 but were missing in the current version of the translation file.

Changes

• Added back CONFIGURATION$SETTINGS_NOT_FOUND with English and Spanish translations
• Restored CONNECT_TO_GITHUB_BY_TOKEN_MODAL$TERMS_OF_SERVICE (en, es)
• Restored SESSION$SERVER_CONNECTED_MESSAGE with all language variants

Context

These translations were identified as missing when comparing the current translation file against commit 92b8d55. Restoring them ensures we maintain full internationalization support for all features.

Testing

• Verified all restored keys match exactly with their previous versions from commit 92b8d55
• Maintained JSON structure and formatting

---

To run this PR locally, use the following command:

docker run -it --rm   -p 3000:3000   -v /var/run/docker.sock:/var/run/docker.sock   --add-host host.docker.internal:host-gateway   -e SANDBOX_RUNTIME_CONTAINER_IMAGE=docker.all-hands.dev/all-hands-ai/runtime:096eb59-nikolaik   --name openhands-app-096eb59   docker.all-hands.dev/all-hands-ai/openhands:096eb59

[raymyers]

I've confirmed these match the translation text and keys from sha 92b8d55c2db6884e7883065a9003fc093903f6c2, which was pre #6070.

[tofarr]

🍰