Implement From< U128 > for u256, b256 #19182

Job	Run time
build-sway-lib-core	1m 13s
build-sway-lib-std	1m 39s
build-forc-doc-sway-lib-std	2m 12s
build-forc-test-project	5m 32s
build-mdbook	3m 25s
build-reference-examples	1m 34s
build-sway-examples	2m 4s
cargo-build-workspace	3m 34s
cargo-clippy	58s
cargo-fmt-check	15s
cargo-run-e2e-test-evm	2m 35s
cargo-toml-fmt-check	15s
check-sdk-harness-test-suite-compatibility	41s
forc-fmt-check-panic	1m 54s
forc-fmt-check-sway-examples	58s
forc-fmt-check-sway-lib-core	1m 7s
forc-fmt-check-sway-lib-std	1m 0s
get-fuel-core-version	49s
cargo-run-e2e-test-midenvm	2m 54s
cargo-test-lib-std	5m 50s
forc-pkg-fuels-deps-check	14s
forc-run-benchmarks	5m 51s
forc-unit-tests	2m 31s
cargo-test-sway-lsp	6m 31s
cargo-test-workspace	6m 1s
cargo-unused-deps-check	4m 11s
pre-publish-check	0s
cargo-run-e2e-test-release	26m 44s
cargo-test-forc-debug	4m 18s
cargo-run-e2e-test	22m 12s
notify-slack-on-failure	2s
build-publish-master-image	0s
publish	0s
build-publish-release-image	0s
Build and upload forc binaries to release	0s
	1h 59m 4s

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