This commit also fixes a gap, where a seed text change could leave the page valid for the
duration of the valid check delay timer, while the seed is actually invalid.
This reverts commit 7f7ee8d82f.
This commit caused a regression with the android back button not closing a dialog.
reproduce:
1. from the main window, press receive.
2. in the request details window, press Create request.
3. in the receive payment dialog, press Copy
4. observe dialog cannot be closed by back button
When called via jsonrpc (but not via cli) with non-string amounts,
there could be a rounding error resulting in sending 1 sat less.
example:
```
$ ./run_electrum --testnet -w ~/.electrum/testnet/wallets/test_segwit_2 paytomany '[["tb1q6k5h4cz6ra8nzhg90xm9wldvadgh0fpttfthcg", 0.00033389]]' --fee 0
02000000000101b9e6018acb16952e3c9618b069df404dc85544eda8120e5f6e7cd7e94ce5ae8d0100000000fdffffff02fd8100000000000016001410c5b97085ec1637a9f702852f5a81f650fae1566d82000000000000160014d5a97ae05a1f4f315d0579b6577daceb5177a42b024730440220251d2ce83f6e69273de8e9be8602fbcf72b9157e1c0116161fa52f7e04db6e4302202d84045cc6b7056a215d1db3f59884e28dadd5257e1a3960068f90df90b452d1012102b0eff3bf364a2ab5effe952cba33521ebede81dac88c71951a5ed598cb48347b3a022500
$ curl --data-binary '{"id":"curltext","method":"paytomany","params":{"outputs":[["tb1q6k5h4cz6ra8nzhg90xm9wldvadgh0fpttfthcg", 0.00033389]], "fee": 0, "wallet": "/home/user/.electrum/testnet/wallets/test_segwit_2"}}' http://user:pass@127.0.0.1:7777
{"id": "curltext", "jsonrpc": "2.0", "result": "02000000000101b9e6018acb16952e3c9618b069df404dc85544eda8120e5f6e7cd7e94ce5ae8d0100000000fdffffff02fe8100000000000016001410c5b97085ec1637a9f702852f5a81f650fae1566c82000000000000160014d5a97ae05a1f4f315d0579b6577daceb5177a42b0247304402206ef66b845ca298c14dc6e8049cba9ed19db1671132194518ce5d521de6f5df8802205ca4b1aee703e3b98331fb9b88210917b385560020c8b2a8a88da38996b101c4012102b0eff3bf364a2ab5effe952cba33521ebede81dac88c71951a5ed598cb48347b39022500"}
```
^ note that first tx has output for 0.00033389, second tx has output for 0.00033388
fixes https://github.com/spesmilo/electrum/issues/8274
previously clicking too far left would not open the wallet-menu:
- click on label would open it, but
- click on wallet-icon or padding to its left would not
SomberNight