skip pending swaps in the swapserver history/summary cli commands.
They are not relevant and don't contain all required informations yet.
Fixes https://github.com/spesmilo/electrum/issues/10521
Fixes https://github.com/spesmilo/electrum/issues/10525
```
File "/home/electrum/electrum-fork/electrum/daemon.py", line 268, in handle
response['result'] = await f(*params)
^^^^^^^^^^^^^^^^
File "/home/electrum/electrum-fork/electrum/daemon.py", line 381, in run_cmdline
result = await func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/electrum/electrum-fork/electrum/commands.py", line 207, in func_wrapper
File "/home/electrum/electrum-fork/electrum/commands.py", line 2349, in func_wrapper
group = parser.add_argument_group('network options')
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/electrum/electrum-fork/electrum/plugins/swapserver/__init__.py", line 79, in get_summary
swap_history = await get_history(self)
^^^^^^^^^^^^^^^^^^^^^^^
File "/home/electrum/electrum-fork/electrum/commands.py", line 207, in func_wrapper
File "/home/electrum/electrum-fork/electrum/commands.py", line 2349, in func_wrapper
group = parser.add_argument_group('network options')
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/electrum/electrum-fork/electrum/plugins/swapserver/__init__.py", line 60, in get_history
'date': swap['date'].strftime("%Y-%m-%d"),
^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'strftime'
```
and restore ability to have different internal ConfigVar name and user-visible "key"
(Keys are hard to change as that breaks compat, but it is nice to be able to change
the internal var name, to reorganise stuff sometimes. After new ConfigVars are added,
sometimes we get better insight into how the older ones should have been named.)
follow-up https://github.com/spesmilo/electrum/pull/9648