Fix trade withdraw to external wallet step 4

[ghost]

The routine cleanUpAddressEntries in TradeManager was prematurely releasing funds associated with trades when they reach the last step of the process (Step 4, Withdraw to External Wallet).

Usually, with a single trade active this would not be an issue because cleanUpAddressEntries is called after the withdrawal, but if you have more than one trade at Step 4 then the first withdrawal would go though, but all the others would fail with an error box "Missing x.xxx BTC" (the trade proceeds or deposit amount). Alternatively, if you restart the bisq app with a
trade in Step 4, the same cleanup will occur and the attempt to withdraw to external wallet will fail.

The change here considers any trade held by the TradeManager to be in use and therefore will not have their associated address entries freed up. After Step 4 has passed, the trade is no
longer held by the TradeManager, and so cleanUpAddressEntries will at that point free up the address.

Fixes #4205
Fixes #3592

[ghost]

Test scenario (issue, prior to fix):

• Create a trade, take it through to Step 4.
• Shut down bisq and restart it, to trigger cleanUpAddressEntries.
• Click Withdraw to External Wallet. It fails with an warning box Missing x.xxxx BTC and in the logs Insufficient Funds exception.

Test scenario (with fix applied):

• Create a trade, take it through to Step 4.
• Shut down bisq and restart it, to trigger cleanUpAddressEntries.
• Click Withdraw to External Wallet and verify that it succeeds.
• Verify that log messages are logged like this, AFTER the withdrawal succeeds.
  We found an outdated addressEntry for trade .. context=TRADE_PAYOUT
swap addressEntry .. offerId from context TRADE_PAYOUT to available

[sqrrm]

utACK

More people testing this during release testing would be good.