Reverts changing the MLX_IBV_DEVICES to MLX_JACCL_DEVICES (#2999) #1

Job	Run time
Check Lint	33s
Linux Fedora (x86_64)	2m 20s
Linux Fedora (aarch64)	2m 17s
Linux (cpu, aarch64)	15m 54s
Linux Sanitizer Tests (ASAN)	2m 56s
Linux (cpu, x86_64)	19m 2s
macOS (${{ matrix.macos-target }})	0s
Linux Sanitizer Tests (UBSAN)	3m 36s
Linux (${{ matrix.toolkit }}, ${{ matrix.arch }})	0s
Build Documentation	0s
	46m 38s

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