Track conditional deletions in the semantic model #25795

Job	Run time
Determine changes	7s
mkdocs	2m 11s
cargo fmt	14s
pre-commit	37s
python package	1m 17s
cargo fuzz	5m 28s
cargo clippy	1m 49s
cargo test (linux)	4m 16s
benchmarks	5m 5s
cargo test (wasm)	1m 12s
cargo test (windows)	6m 45s
formatter instabilities and black similarity	0s
cargo udeps	2m 5s
test scripts	1m 1s
test ruff-lsp	30s
ecosystem	8m 35s
	41m 12s

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