[Backport 4868 to 2.10.x] [Fixes #4827] Line layer uploaded to GeoNode is rendered as point layer (#4868)

[afabiani]

Commits ["5dc3ef0a6478ead4ba5ce7ed0e6eb8f920514cfa","94574f42c0ccdc9a5334fc98419bb85a1166f14d"] could not be cherry-picked on top of 2.10.x
To backport manually, run these commands in your terminal:

Fetch latest updates from GitHub.

git fetch

Create new working tree.

git worktree add .worktrees/backport 2.10.x

Navigate to the new directory.

cd .worktrees/backport

Cherry-pick all the commits of this pull request and resolve the likely conflicts.

git cherry-pick 5dc3ef0 94574f4

Create a new branch with these backported commits.

git checkout -b backport-4868-to-2.10.x

Push it to GitHub.

git push --set-upstream origin backport-4868-to-2.10.x

Go back to the original working tree.

cd ../..

Delete the working tree.

git worktree remove .worktrees/backport
Then, create a pull request where the base branch is 2.10.x and the compare/head branch is backport-4868-to-2.10.x.