Crowdfund App Perks with custom price are not taken into account of goal (LNURL method at least)

Describe the bug

Crowdfund App Perks with custom price are not taken into account of goal (LNURL method at least)

To Reproduce the bug Steps to reproduce the reported bug:

1. Create Crowdfund App
2. Create some Perks with sums
3. Create one Perk with “Price Custom”
4. To go Crowdfund page
5. Click by Custom Perk
6. To pay a Custom Perk by Lightning for example (I didn’t test Bitcoin on-chain) by LNURL method
7. When a Custom Perk is paid the sum is not taken into account - a goal volume is not increased and the amount is visible only in the general invoices, but is not visible in the invoices of Crowdfunding itself!

Expected behavior

The custom price contribution should be taken into account both in the amount of the goal and visible in invoices of crowdfunding admin area, for example.

Your BTCPay Environment (please complete the following information):

• BTCPay Server Version: 1.5.2.0
• Deployment Method: LunaNode’s template
• Browser: Firefox 100.*

Logs (if applicable)

Setup Parameters

Additional context

[bolatovumar]

Made a PR to just remove this way of generating the LNURL QR code since it doesn’t really make sense to have two ways to do the same thing and pretty much everywhere else we just use the invoice checkout page for this purpose.

[Kukks]

Personally, I would prefer if we move out the ability for user to pick between standard and lnurl and just leave it to happen on the invoice level, this is way too many clicks for to achieve the same thing.

Considering you also want to remove lnurl from the invoice, you will end up removing all lnurl functionality at this rate.