fix: Fee above 10 USD sanity check and don't skip checks

[jvsena42]

Closes #325, Closes #328

Description

This PR fixes the fee above 10 USD sanity check. The method was using the full sending amount instead of just the fee value.
Also check all the sanity checks instead of skipping the others after confirming the first one

Preview

sanity_checks.mp4

fee_check.mp4

QA Notes

Steps to reproduce:

1. Have ₿ 100 000 000 in the wallet.
2. Send ₿ 51 000 000 and swipe to confirm, i.e., over 50% of funds.
3. Notice the sending over 50% of balance warning pop-up appearing.
4. Cancel the tx.
5. Enable the warning for sending over 100$. (Settings > Security and Privacy > Warn when sending over $100)
6. Go back and send again ₿ 51 000 000. Swipe to confirm.
7. Notice the sending over 100$ warning pop-up appearing.
8. Confirm pop-up.
9. Try to send with a fee of above 10 USD
10. Notice the pop-up appearing
11. Confirm pop-up
12. Try to send with a fee of above half the sending amount
13. Notice the pop-up
14. Confirm pop-up
15. No other pop-up should be displayed

[piotr-iohk]

Locally tested #325 and #328 against this branch. Scenarios are passing 👍

[piotr-iohk]

LGTM 👍