Pansharpening: make sure VRTPansharpenedRasterBand of overviews inherit the nodata value from the full res band

[rouault]

No description provided.

[rouault]

The backport to release/3.11 failed:

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

stderr

error: could not apply b4b9609767... Pansharpening: make sure VRTPansharpenedRasterBand of overviews inherit the nodata value from the full res band
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".
hint: Disable this message with "git config set advice.mergeConflict false"

stdout

Auto-merging autotest/gdrivers/vrtpansharpen.py
Auto-merging frmts/vrt/vrtpansharpened.cpp
CONFLICT (content): Merge conflict in frmts/vrt/vrtpansharpened.cpp

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-release/3.11 release/3.11
# Navigate to the new working tree
cd .worktrees/backport-release/3.11
# Create a new branch
git switch --create backport-13231-to-release/3.11
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick b4b9609767216a94a9f78457058a2b8bf6330252
# Push it to GitHub
git push --set-upstream origin backport-13231-to-release/3.11
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-release/3.11

Then, create a pull request where the base branch is release/3.11 and the compare/head branch is backport-13231-to-release/3.11.

[rouault]

cherry-picked to 3.11 per 44443bd