perf: don't track seen for POS Invoice (backport #46187)

[mergify]

This is a fast moving doctype. Do people even browse the list view?

It doesn't make much sense either. POS Invoices are rarely "reviewed" by multiple users.

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This is an automatic backport of pull request #46187 done by Mergify.

[mergify]

Cherry-pick of ded0aab has failed:

On branch mergify/bp/version-15-hotfix/pr-46187
Your branch is up to date with 'origin/version-15-hotfix'.

You are currently cherry-picking commit ded0aab680.
  (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:   erpnext/accounts/doctype/pos_invoice/pos_invoice.json

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

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally