pimd: fix dense mode State Refresh relay forwarding (backport #22177)

[mergify]

The State Refresh relay path had two bugs that prevented multi-hop
propagation in dense-mode.

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This is an automatic backport of pull request #22177 done by Mergify.

[mergify]

Cherry-pick of b459d0f has failed:

On branch mergify/bp/stable/10.6/pr-22177
Your branch is up to date with 'origin/stable/10.6'.

You are currently cherry-picking commit b459d0f01.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   pimd/pim_state_refresh.c

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

Cherry-pick of bbe9c59 has failed:

On branch mergify/bp/stable/10.6/pr-22177
Your branch is ahead of 'origin/stable/10.6' by 1 commit.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit bbe9c5933.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   tests/topotests/pim_dense/test_pim_dense.py

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

Jafar: fixed.

[greptile-apps]

Target branch is not in the allowed branches list.

[github-actions]

This pull request has conflicts, please resolve those before we can evaluate the pull request.