Fix gdal sample identify/sample precision issue

[elpaso]

Fixes #44902 plus an unreported crash

[qgis-bot]

The backport to queued_ltr_backports failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-queued_ltr_backports queued_ltr_backports
# Navigate to the new working tree
cd .worktrees/backport-queued_ltr_backports
# Create a new branch
git switch --create backport-45086-to-queued_ltr_backports
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick b381abb79a1095dfca8a398197f6457e031e9a60,c59cffbfd160a6e2fe8cd03c40d193d2b11bf906
# Push it to GitHub
git push --set-upstream origin backport-45086-to-queued_ltr_backports
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-queued_ltr_backports

Then, create a pull request where the base branch is queued_ltr_backports and the compare/head branch is backport-45086-to-queued_ltr_backports.