Alt+Up and Alt+Down do not display selected record

[fireundubh]

Summary

something broke with alt+up/down. if the cursor's focused on the record itself rather than record list on the left, alt+up/down doesn't change the displayed record

via Discord (yarrmateys#9065)

Conditions

• xEdit 4.1.3b

Steps to Reproduce

1. Activate the View frame.
2. Press Alt+Up or Alt+Down to navigate the tree.

Result

Per TfrmMain.FormKeyDown starting at line 6290, we should be able to navigate the tree using arrow keys with the Alt modifier, but due to the fix for #798, this does not happen.

The selection changes but the record for the focused node is not displayed in the View frame.

We likely need to call TryViewOrCompareSelectedRecords in TfrmMain.FormKeyDown somewhere. Need to investigate further.

Addendum

We should implement functionality that allows Alt+Shift+Up and Alt+Shift+Down to select multiple records, too.

[yarrmateys]

alt+arrow isn't the only thing that causes this problem. it may be related to the same bug though. on the list if you use something other than up/down, like a letter to find the plugins starting with it or home to go to the top, the display also won't refresh. say, you start on fallout4.esm and press d a few times to cycle through the dlc files.