[Legacy] Reflections look broken when opening/closing windows

[ImSwordQueen]

in OpenGlass Legacy 1.2+ the reflections break when closing/opening windows while using the baked in reflection texture and not the aero peek one from msstyles.

Video comparations:

OpenGlass "1.1": https://github.com/user-attachments/assets/6a18cbbc-d154-4930-a363-d4f12825260e

OpenGlass 1.2+ (Tested on 1.3. Confirmed to be an issue on 1.2 as well); https://github.com/user-attachments/assets/1b3e19f2-086d-492e-a13c-1367b193d0fa

Windows 7 (As reference): https://github.com/user-attachments/assets/630e8f8b-b428-4575-8638-4aa763ec1d7b

Images:

OpenGlass "1.1":

OpenGlass 1.2+:

Windows 7 (Reference):

[ALTaleX531]

Since the reflection rendering part is not yet done for offscreen rendering, I'll treat this issue as an feature request.

[ALTaleX531]

Done.