fix(bw): multiple issues with menu navigation for 9X type radios

[philmoz]

From 2.10 the menu navigation on 9X style radios (T-Lite, T12 and LR3Pro) does not work correctly.

Issues:

• Horizontal navigation on the SF/GF list does not work. Cannot select all properties for each SF/GF type.
• The FM list view has too many lines. Scrolling up from the top shows two blank lines at the bottom.
• Returning from the FM edit page to the FM list view may show the list view with the wrong scroll position if the edit page was scrolled to the bottom before exiting. Also affects other B&W radios when using long press to exit FM edit page.
• The short press of the EXIT key following a long press to exit a subpage was not being killed resulting in spurious activation of the EXIT key. Also affects other B&W radios.

Fixing the above issues caused other issues requiring more fixes (Model select page was one row short and FM edit page was missing G9 entry).

[pfeerick]

Seems good on LR3Pro and no apparent regressions on X9D+

[pfeerick]

Actually, why did you change this? As up/down was correct for popup menu navigation on the t-lite (and also the LR3pro I think). Hence #4917, although depending on the reason it may need to remove this change.

[philmoz]

To fix the left right scrolling on the SF/GF page for 9x nav - I fixed this first and meant to come back and check that it did not affect other things (which it clearly did). Thanks for picking it up - the fix in 4917 looks better.

[pfeerick]

Yeah, I thought that might be the case when digging a bit deeper... I suspect it is has been broken somewhere else, but that should hopefully do for now to make most all the use cases work. 🤞 Will need revisiting in the future though as the popup menus should't be responding to sideways keys, hence the real 🐛 is somewhere else 🤪