Fix breadcrumbs/excluding collection index pages from parent relationship

[kolchfa-aws]

Closes #6935

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[hdhalter]

Thanks, @kolchfa-aws! I tested it, and it fixes the second-level breadcrumbs. At some point we should fix the jekyll template so that the top level topic appears, but this is good for now.

[kolchfa-aws]

@hdhalter This is the default behavior of our current template. You can put in a feature request for the template change so we have this task on our radar.

[opensearch-trigger-bot]

The backport to 2.15 failed:

The process '/usr/bin/git' failed with exit code 128

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-2.15 2.15
# Navigate to the new working tree
pushd ../.worktrees/backport-2.15
# Create a new branch
git switch --create backport/backport-7758-to-2.15
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 d8f1b7b95d3d90f130b6b590ee7526ca0c8a186a
# Push it to GitHub
git push --set-upstream origin backport/backport-7758-to-2.15
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/backport-2.15

Then, create a pull request where the base branch is 2.15 and the compare/head branch is backport/backport-7758-to-2.15.

[opensearch-trigger-bot]

The backport to 2.15 failed:

The process '/usr/bin/git' failed with exit code 128

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-2.15 2.15
# Navigate to the new working tree
pushd ../.worktrees/backport-2.15
# Create a new branch
git switch --create backport/backport-7758-to-2.15
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 d8f1b7b95d3d90f130b6b590ee7526ca0c8a186a
# Push it to GitHub
git push --set-upstream origin backport/backport-7758-to-2.15
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/backport-2.15

Then, create a pull request where the base branch is 2.15 and the compare/head branch is backport/backport-7758-to-2.15.