Remove reference from statically_required_property's FieldValue #1289

Job	Run time
Check rustdoc WASM target	29s
Check fuzz targets	31s
Run JS linters	1m 51s
Check lint and rustfmt	58s
Run tests	2m 5s
WASM tests	1m 22s
Python tests and maturin build (3.9)	1m 2s
Python tests and maturin build (3.10)	1m 9s
Python tests and maturin build (3.11)	1m 4s
pre-publish checks	0s
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
	10m 32s

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