Multigroup components are created in reverse order of the component string

[ranjian0]

Describe the bug
A multigroup component string "dw" results in geometry with a window then a door from left to right.

To Reproduce
Steps to reproduce the behavior:

1. Click on Add multigroup
2. Adjust component string
3. View result

Expected behavior
Components should be created in the order of the string i.e "dw" should create a door on the left and a window on the right.

Screenshots

Desktop (please complete the following information):

• OS: [e.g. iOS] Linux Mint
• Blender Version [e.g. 2.83] 2.91.0
• Addon Version [e.g. 1.0-beta] master branch