Filter on peers on portfolio_name

[AlexAxthelm]

Currently only investor_name column is used to filter peer data in techexposure, techexposure_future and trajectory_alignment. I consider this not to be robust given that later in the charts it is the portfolio_name column that is used to display the peer_group name. In principle, for aggregated peer results both of these columns should be equal and I think that the filter should be applied to both.

Migration of https://github.com/RMI-PACTA/pacta.interactive.report/issues/154