Software renderer: fix drawing background of rotated screen #20507

Job	Run time
cpp_cmake (macos-14, 1.82)	5m 53s
cpp_test_driver (ubuntu-22.04)	7m 21s
android	2m 16s
cpp_cmake (windows-2022, nightly)	8m 34s
build_and_test (ubuntu-22.04, 1.82)	16m 43s
cpp_test_driver (macos-13)	7m 3s
cpp_cmake (ubuntu-22.04, stable)	7m 57s
build_and_test (macos-14, stable)	17m 44s
cpp_test_driver (windows-2022)	9m 9s
build_and_test (windows-2022, stable)	27m 32s
esp-idf-quick	9m 30s
ffi_32bit_build	1m 12s
fmt_test	1m 53s
mcu (pico-st7789, thumbv6m-none-eabi)	40s
build_and_test (windows-2022, 1.82)	26m 7s
mcu_esp	2m 52s
mcu (pico2-st7789, thumbv8m.main-none-eabihf)	42s
build_and_test (windows-2022, beta, --exclude ffmpeg --exclude gstreamer-player)	26m 12s
mcu-embassy	1m 28s
mcu (stm32h735g, thumbv7em-none-eabihf)	52s
miri	53s
node_test (ubuntu-22.04)	2m 49s
python_test (ubuntu-22.04)	4m 12s
test-figma-inspector	26s
node_test (macos-14)	2m 21s
python_test (macos-14)	3m 42s
node_test (windows-2022)	8m 22s
python_test (windows-2022)	6m 34s
updater_test (0.3.0)	1m 36s
vsce_build_test	7m 3s
docs / docs	14m 7s
wasm / wasm	5m 5s
tree-sitter / tree-sitter-tests	9s
wasm_demo / wasm_demo	2m 43s
cpp_package_test	2m 12s
wasm / build-slintpad	2m 7s
	4h 6m 1s

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