perf: switch webpack mode to lazy

[kesselb]

Create separate module for each ckeditor translation instead one large bundle with all translations.

Testing:

• Set the language in nextcloud to not english
• Open network inspector
• Click "new message"
• See an xhr request for a js file containing the translations (on main you won't see that, as there bundle with all translations was fetched before).

main:

this branch:

[ChristophWurst]

/backport to stable5.5

[backportbot]

The backport to stable5.5 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable5.5
git pull origin stable5.5

# Create the new backport branch
git checkout -b backport/12005/stable5.5

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 9d8f1f32

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/12005/stable5.5

Error: Failed to check for changes with origin/stable5.5: No changes found in backport branch

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.