fix: payment reconciliation get negative outstanding invoices.

[dj12djdjs]

Steps to Reproduce

1. Create Sales Invoice
2. Create Payment Entry Against Sales Invoice
3. Create Credit Note Against Sales Invoice (Sales Invoice Outstanding Amount is now negative.
4. Go to Payment Reconciliation form the negative sales invoice should be assignable as payment.

[stale]

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[barredterra]

@dj12djdjs can you summarize he current status, which PRs can be merged in which order, any outstanding issues, etc?

[aakvatech]

Are we expecting this to be pushed forward?

[dj12djdjs]

Closing as it will be resolved by #35330 (comment)