fix(transfer): remove 80% onchain cap, misc fixes

[pwltr]

Description

• remove 80% onchain cap for channel orders, now uses fee estimation from LSP and adds that to the spendable onchain balance
• add CJIT max amount client validation

Linked Issues/Tasks

Closes https://github.com/synonymdev/bitkit/issues/2393 https://github.com/synonymdev/bitkit/issues/2249

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactoring (improving code without creating new functionality)

Tests

• Detox test
• Unit test
• No test

Screenshot / Video

Simulator.Screen.Recording.-.iPhone.16.-.2024-12-17.at.16.01.55.mp4

QA Notes

Because the LSP service fee estimation when calculating the max amount is slightly lower than the actual there will be a dust output leftover which is added to the onchain fee.

[pwltr]

The transaction is already setup correctly and the amount validated in the beginning of the transfer flow so this can be simplified to only updating the recipient address and amount.