Show 'not enough liquidity/error loading price' message to a not connected user

[elena-zh]

Originally reported in https://github.com/gnosis/cowswap/pull/1986#pullrequestreview-827950470

If you are connected, we fail to show the user if there's an issue with the price:

Not enough liquidity:

It would be nice to show these messages to a not connected user.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. If you think it shouldn't be closed, speak now or forever hold your peace.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. If you think it shouldn't be closed, speak now or forever hold your peace.