Enable `tie_word_embeddings` config setting to enable / disable weigh… #291

Job	Run time
docker-build (1.13.1_cu117, mosaicml/pytorch:1.13.1_cu117-python3.10-ubuntu20.04, [gpu])	29s
docker-build (2.0.1_cu118, mosaicml/pytorch:2.0.1_cu118-python3.10-ubuntu20.04, [gpu])	1m 17s
docker-build (2.1.0_cu121, mosaicml/pytorch:2.1.0_cu121-python3.10-ubuntu20.04, [gpu])	33s
docker-build (2.1.0_cu121_flash2, mosaicml/pytorch:2.1.0_cu121-python3.10-ubuntu20.04, [gpu-flash2])	27s
docker-build (2.1.0_cu121_aws, mosaicml/pytorch:2.1.0_cu121-python3.10-ubuntu20.04-aws, [gpu])	1m 8s
docker-build (2.1.0_cu121_flash2_aws, mosaicml/pytorch:2.1.0_cu121-python3.10-ubuntu20.04-aws, [g...	1m 36s
	5m 30s

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