Updated Pack property names to match CSS #7396

Job	Run time
Pre-commit checks / Pre-commit Checks	37s
Check towncrier / Towncrier Checks	37s
Package Toga (core) / Create Python Package	27s
Package Toga (android) / Create Python Package	24s
Package Toga (cocoa) / Create Python Package	24s
Package Toga (demo) / Create Python Package	18s
Package Toga (dummy) / Create Python Package	35s
Package Toga (gtk) / Create Python Package	27s
Package Toga (textual) / Create Python Package	24s
Package Toga (iOS) / Create Python Package	16s
Package Toga (toga) / Create Python Package	15s
Package Toga (winforms) / Create Python Package	26s
Package Toga (web) / Create Python Package	24s
MicroPython compatibility	35s
Test core (macos-latest, 3.9)	57s
Test core (macos-latest, 3.10)	1m 0s
Test core (macos-latest, 3.11)	42s
Test core (macos-latest, 3.12)	49s
Test core (macos-latest, 3.13)	47s
Test core (ubuntu-latest, 3.9)	59s
Test core (ubuntu-latest, 3.10)	51s
Test core (ubuntu-latest, 3.11)	54s
Test core (ubuntu-latest, 3.12)	1m 6s
Test core (ubuntu-latest, 3.13)	1m 13s
Test core (windows-latest, 3.9)	1m 38s
Test core (windows-latest, 3.10)	1m 32s
Test core (windows-latest, 3.11)	1m 35s
Test core (windows-latest, 3.12)	1m 51s
Test core (windows-latest, 3.13)	2m 46s
Testbed (macOS-x86_64)	8m 2s
Coverage	30s
Testbed (macOS-arm64)	6m 33s
Testbed (windows)	8m 29s
Testbed (linux-x11)	5m 34s
Testbed (linux-wayland)	5m 39s
Testbed (android)	10m 40s
Testbed (iOS)	7m 50s
Testbed (textual-linux)	49s
Testbed (textual-macOS)	1m 10s
Testbed (textual-windows)	2m 15s
	1h 22m 20s

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