[AMD] Enable supportBitwidth{16|32}Elementwise in TargetInfo #11081

Job	Run time
runner-preparation / prepare	5s
pre-commit / pre-commit (code formatting)	52s
build-macos / Build MacOS (macos-latest)	9m 47s
integration-tests-nvidia / integration-tests-nvidia (nvidia-gb200)	27m 25s
integration-tests-nvidia / integration-tests-nvidia (nvidia-h100)	26m 11s
integration-tests-amd / integration-tests-amd (self-hosted, gfx90a)	11m 14s
integration-tests-nvidia / integration-tests-nvidia (nvidia-a100)	17m 57s
integration-tests-amd / integration-tests-amd (amd-gfx942)	15m 12s
integration-tests-amd / integration-tests-amd (amd-gfx950)	12m 32s
	2h 1m 15s

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