Activate RemoteEmptyWorkbenchPresentation on LifecyclePhase.Ready. For #159675

[aeschli]

I tested that chaning to ready works.

To verify:

• set "workbench.startupEditor": "newUntitledFile"
• open a remote window from the command line

e.g. /scripts/code.sh -remote=test+test -n

The file explorer should open

[bpasero]

Note that Ready will also block an editor from restoring. But I really did not see this contribution showing up often as blocking more than 5ms, just once. It maybe a red herring. Best to review the contribution if there is any code in there that is potentially long running.