chore: rename `DefinitionKind::GenericType` #13522

Job	Run time
build-acvm-js	1m 18s
build-nargo	2m 44s
build-noirc-abi	1m 23s
build-noir-wasm	4m 18s
ACVM JS (Browser)	1m 42s
ACVM JS (Node.js)	42s
noirc_abi	1m 16s
Example scripts	21s
Check external repo - ${{ matrix.project.repo }}	0s
noir_codegen	1m 18s
Noir JS	1m 25s
Integration Tests (Browser)	2m 29s
noir_wasm	2m 52s
Integration Tests (Node)	2m 21s
End	1s
	24m 10s

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