Select target instead of connection when connecting

[philippfromme]

Is your feature request related to a problem? Please describe.

When connecting two shapes the new connection will be selected afterwards. We should reconsider whether it would be
better for the flow to select the target instead.

Describe the solution you'd like

Select target after connect.

Describe alternatives you've considered

Keeping the existing behavior.

Additional context

Slack thread: https://camunda.slack.com/archives/C0693F1NFK5/p1713361255849419

[barmac]

I think it makes sense!

[nikku]

This could improve modeling flow but conflicts with "upgrading the connection once added", cf. below:

[nikku]

Once we get to this issue, let's consider if we can test what the expected behavior is.