On receive window should show a message of maximum able to receive

I use Alby connected on my Umbrel and I have limited inbound capacity. Alby should show a message on receive window of maximum allowed to receive. And not be able to create invoices of values more than maximum inbound capacity

The issue names the receive window and invoice creation flow but no files or tests. Start by locating those entry points and how inbound capacity is obtained; done means showing the maximum receivable amount and preventing invoices above that limit.

Written by the indexing model from the issue text.