"Toolbar" and "Gallery Panel" re-enabled after quitting from full screen mode

[Balzhur]

System information:

• Windows OS version: Windows 11 Pro 23H2 22631.2715
• ImageGlass version: 9.0.7.1125 (64 bit) Windows Store version. .NET 8

To Reproduce

Steps to reproduce the behavior:

1. Delete igconfig.json to have a clean state
2. Start IG
3. Press "T", "G"
4. Exit IG
5. Start IG - IG starts in windowed mode with no toolbar and gallery panel --> ${\color{green}OK}$
6. Press "F11" for full screen then "Esc" to exit
7. Start IG - IG starts in Full Screen, but toolbar and gallery panel are back --> ${\color{red}not\ OK}$

Actual behavior:

See steps to reproduce.
"Toolbar" and "Gallery Panel" re-enabled automatically after quitting IG from full screen mode with toolbar and gallery turned off.

Expected behavior:

Toolbar and gallery panel states are saved during exit.

[siblount]

Related to #1715

[d2phap]

Should be fixed in ImageGlass 9.0.9.1230