fix(experimental elaborator): Move code to declare trait impls earlier #7349

Job	Run time
build-acvm-js	1m 24s
build-nargo	2m 21s
build-noirc-abi	2m 5s
build-noir-wasm	3m 46s
ACVM JS (Node.js)	46s
ACVM JS (Browser)	1m 13s
noirc_abi	1m 13s
noir-js-backend-barretenberg	47s
noir_codegen	58s
Example scripts	11s
Noir JS	1m 33s
noir_wasm	1m 54s
Integration Tests (Browser)	6m 0s
Integration Tests (Node)	3m 46s
End	1s
	27m 58s

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