--startup.project option does not work with the new dashboard.

[farmaazon]

When providing --startup.project option, the IDE went directly to the project view, now it displays Dashboard instead. We should fix this or remove the option from the list.

The latter is less preferable, as it's convenient to me to run something like enso-build-cli ide watch --skip-wasm-opt --ide-option --debug.dev-tools --ide-option --startup.project --ide-option Unnamed_7 so I don't have to pick the project on every electron restart.

[farmaazon]

Moreover, this option breaks the project: No matter what project do I open in the dashboard, the appointed one is opened, but the node are not colored.

[somebody1234]

should it be able to go back to the dashboard? (it's a lot easier to not allow it to go back to the dashboard, just wondering what is the more correct thing to do here)

[somebody1234]

on second thought, i think the dashboard should be completely disabled, since manipulating the URL query string to remove -startup.project to allow opening a different project is A Bad Idea

[somebody1234]

for posterity: it will be changed to open the dashboard soon, since we want to avoid introducing different modes where e.g. something is disabled. see this comment for more info:
#6671 (comment)