Allow `@transform` directive to be applied to properties. #1615

Job	Run time
Run JS linters	45s
Check fuzz targets	12s
Check rustdoc WASM target	8s
Check lint and rustfmt	36s
Run tests	1m 3s
WASM tests	1m 9s
Python tests and maturin build (3.9)	38s
Python tests and maturin build (3.10)	43s
Python tests and maturin build (3.11)	1m 3s
pre-publish checks	0s
Python tests and maturin build (3.12)	40s
All CI stages	1s
pre-publish checks	0s
publish trustfall_filetests_macros	0s
publish trustfall_core	0s
publish python trustfall	0s
publish trustfall_derive	0s
publish trustfall	0s
publish trustfall_stubgen	0s
	6m 58s

Provide feedback