fix: Org Chart fixes (backport #27290)

[mergify]

Before:

If there are multiple root nodes with descendants, only the first root and all it's descendants were getting expanded on clicking Expand All:

After:

Before:

The HR breadcrumb was added from the hierarchy chart class which is meant to be a generic class.

After:

Shifted frappe.breadcrumbs.add('HR') to org chart page file instead.

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This is an automatic backport of pull request #27290 done by Mergify.

[mergify]

Cherry-pick of f828d85 has failed:

On branch mergify/bp/version-13-hotfix/pr-27290
Your branch is up to date with 'origin/version-13-hotfix'.

You are currently cherry-picking commit f828d853e3.
  (fix conflicts and run "git cherry-pick --continue")
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  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   erpnext/public/js/hierarchy_chart/hierarchy_chart_desktop.js
	both modified:   erpnext/utilities/hierarchy_chart.py

no changes added to commit (use "git add" and/or "git commit -a")

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