Fix `scwq` instruction and "phantom" error in purity checks #21099

Job	Run time
build-sway-lib-core	1m 9s
get-fuel-core-version	48s
build-reference-examples	1m 30s
build-sway-examples	1m 32s
build-sway-lib-std	1m 27s
check-sdk-harness-test-suite-compatibility	39s
forc-fmt-check-panic	2m 6s
forc-fmt-check-sway-examples	58s
forc-fmt-check-sway-lib-core	1m 11s
forc-fmt-check-sway-lib-std	59s
build-forc-doc-sway-lib-std	2m 18s
build-forc-test-project	6m 3s
build-mdbook	7m 51s
cargo-build-workspace	3m 59s
cargo-clippy	58s
cargo-fmt-check	15s
cargo-run-e2e-test-evm	2m 51s
cargo-run-e2e-test-midenvm	2m 36s
cargo-test-lib-std	2m 46s
cargo-toml-fmt-check	17s
forc-pkg-fuels-deps-check	15s
forc-run-benchmarks	3m 56s
forc-unit-tests	2m 6s
cargo-test-sway-lsp	5m 43s
cargo-test-workspace	5m 18s
cargo-unused-deps-check	4m 23s
pre-publish-check	0s
cargo-test-forc-debug	3m 55s
cargo-run-e2e-test	13m 7s
cargo-run-e2e-test-release	15m 6s
cargo-test-forc-client	4m 41s
notify-slack-on-failure	1s
build-publish-master-image	0s
publish	0s
build-publish-release-image	0s
Build and upload forc binaries to release	0s
	1h 40m 44s

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