fix: pay_invoice timeout to prevent blocking (#2875)

* fix: make invoice non blocking

* fix with vlad

* wallet.js take pending into account

* fixup!

* add check payment to outgoing

* revert

* bundle

* fix: label

* fix: rebase change

* feat: configure pay invoice wait time

* fix: check payment button

* bundle

* fix: task in async context

---------

Co-authored-by: Vlad Stan <stan.v.vlad@gmail.com>

lnbits/settings.py

@@ -553,6 +553,9 @@ class FundingSourcesSettings(
     BreezSdkFundingSource,
 ):
     lnbits_backend_wallet_class: str = Field(default="VoidWallet")
+    # How long to wait for the payment to be confirmed before returning a pending status
+    # It will not fail the payment, it will make it return pending after the timeout
+    lnbits_funding_source_pay_invoice_wait_seconds: int = Field(default=5)
 
 
 class WebPushSettings(LNbitsSettings):