[BUG] append initial logic block to another logic block  #150

Describe the bug
when add initial logic block into logic board. drag under the another block (etc. def, class, for, if) to append as child. but it is
always appended outside(root level).

To Reproduce
Steps to reproduce the behavior:

1. Go to 'logic menu'
2. Click on 'show vp note'
3. Drag and drop 'logic block' in to 'logic board' under the another block
4. See error

Expected behavior
what you expected to happen
when drag initial logic block under the another block as child. it is appended the target block not root level
Screenshots

Desktop (please complete the following information):

• OS: Mac 12.4
• Browser chrome 103.0.5060.134

VisualPython Information (please complete the following information):

• Version [2.2.8]

Additional context
any other context about the problem here.