Keep editors open instead of closing them when loading fails on startup

[bpasero]

Helps for microsoft/vscode-remote-release#3475

[CodeSammich]

For me, it seems to only occur in two scenarios:

1. When disconnected from SSH, any options besides "Reload Window" is selected will remove old tabs (e.g. Close Remote)

2. When disconnected from SSH due to inactivity and the auto-reconnect options are not given, possible due to "successful" reconnect. This may be due to the auto-reconnect using the same logic as "Close Remote" -> "Connect" instead of "Reload Window" after SSH connection is established.

[bpasero]

Pushed a change to keep editors open when the fail to restore:

This is enabled by default but depending on feedback might warrant for a setting. The editor will still close automatically when the act of opening an editor newly fails.

[apeforever]

Could you add a setting please ? Thanks a lot

[bpasero]

Can you open a new feature request for that please.