opening a VST preset should not open the VST GUI

tittle says it, but it is unnecessary that all VST GUI is opened, either when the user picks a single VST-preset from 'My-presets' _and_ when a project with VST-presets is opened
All these GUIs are just a tedious windows-closing-task, that has to be done, because the presets are not meant to be changed! The Lmms-vst-ctlr-page is where the user will automate dials.
I would prefer VST loading, without all GUIs being opened at the same time

..what says ye ?

Start by tracing VST preset loading in the “My-presets” flow and when a project with VST presets is opened. Check how these paths interact with the Lmms-vst-ctlr-page. Done means presets load without opening every VST GUI while the controller page remains available for automation.

Written by the indexing model from the issue text.