schematic: drawing sheet layout not saved
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# Description
The current sheet layout is not saved.
# Steps to reproduce
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1. Change current sheet layout
2. Save and close project
3. Open project
4. Observe it uses default sheet layout instead of the one you picked
# KiCad Version
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```
Application: KiCad Schematic Editor arm64 on arm64
Version: (7.99.0-363-g61d30ee5bc), release build
Libraries:
wxWidgets 3.2.2
FreeType 2.12.1
HarfBuzz 5.3.1
FontConfig 2.14.0
libcurl/7.79.1 (SecureTransport) LibreSSL/3.3.6 zlib/1.2.11 nghttp2/1.45.1
Platform: macOS Monterey Version 12.5.1 (Build 21G83), 64 bit, Little endian, wxMac
Build Info:
Date: Mar 6 2023 01:20:36
wxWidgets: 3.2.2 (wchar_t,wx containers)
Boost: 1.80.0
OCC: 7.6.3
Curl: 7.77.0
ngspice: 38
Compiler: Clang 13.0.0 with C++ ABI 1002
Build settings:
KICAD_SPICE=ON
```
issue