[Feature Request] Persist status of collapsible list entries in "Performance -> Calculation / Tab Calculation" screen

[SteffenBauer]

Is your feature request related to a problem? Please describe.
When opening PortfolioPerformance, the collapsible elements at Performance / Calculation in the tab "Calculation" are always shown fully uncollapsed, showing both the aggregated values together with the values for all individual securities. When a portfolio contains a dozen or so of different securities, this makes the screen cluttered and confusing. Collapsing the elements "Capital Gains", "Realized Capital Gains" etc. makes the screen way more clear to get a general overview how performance was calculated. Furthermore, uncollapsed list elements quickly cause a scroll bar, with the values at "Initial value" and "Final value" visually separated.

Unfortunately, the status of the collapsibles is not persisted at all. When switching to a different screen and switching back to performance calculation, all elements are uncollapsed again. Also not persisted over a restart of the app.

There is the possibility to "collapse all" and "uncollapse all" with a right-click, but always having to do an extra mouse-click to get the screen to the desired default state of everything collapsed feels like unnecessary effort.

A very similiar problem was reported as a bug around three years ago: #2416

Describe the solution you'd like
The status of the collapsible elements is persisted in the GUI settings, over a restart of the app, and during an app session.

Describe alternatives you've considered
Only alternative I can think of is to keep it like it currently is.