[BUG] Part of tree is invisible if prerequisite is empty.

[Mefisto1029]

Describe the bug Part of tree is invisible if prerequisite is in focus but is empty.

To Reproduce Steps to reproduce the behavior:

1. See "FRA_devalue_the_franc" in French tree.

Expected behavior Even with empty prerequisites bracket, focus tree should be visible.

Screenshots With empty prerequisites Without prerequisites

Desktop (please complete the following information):

• OS: Windows 7
• VSCode version: 1.70.3
• Extension version: v0.7.1

[herbix]

Fixed in 0.7.3