Modernise remaining uses of `GetSortedLanes()`

[originalfoo]

Final batch of GetSortedLanes() updates.

Also reduced memalloc/gc of lists in some Record classes, and removed some unused using statements.

[originalfoo]

@kianzarrin how often do the record lists get created? I assume it's only in asset editor and only when plopping assets on map so not performance critical?

[kianzarrin]

Not performance critical. It happens due to a user event:

• asset editor save
• move it copy/save
• TMPE priority road button pressed (so that I can undo)
• in future: every time user changes TMPE rules (so that I can undo)

[originalfoo]

bump