Fixed unfused attn2d scale #2422

Job	Run time
Run tests on ubuntu-latest with Python 3.10	1m 32s
Run tests on ubuntu-latest with Python 3.10	1h 1m 19s
Run tests on ubuntu-latest with Python 3.10	1h 26m 26s
Run tests on ubuntu-latest with Python 3.10	32m 39s
Run tests on ubuntu-latest with Python 3.10	34m 25s
Run tests on ubuntu-latest with Python 3.10	42m 33s
Run tests on ubuntu-latest with Python 3.10	35m 10s
Run tests on ubuntu-latest with Python 3.10	1m 52s
Run tests on ubuntu-latest with Python 3.10	42m 51s
Run tests on ubuntu-latest with Python 3.10	1h 5m 33s
Run tests on ubuntu-latest with Python 3.10	30m 24s
Run tests on ubuntu-latest with Python 3.10	30m 2s
Run tests on ubuntu-latest with Python 3.10	38m 56s
Run tests on ubuntu-latest with Python 3.10	31m 50s
Run tests on ubuntu-latest with Python 3.12	2m 12s
Run tests on ubuntu-latest with Python 3.12	43m 53s
Run tests on ubuntu-latest with Python 3.12	1h 5m 12s
Run tests on ubuntu-latest with Python 3.12	28m 26s
Run tests on ubuntu-latest with Python 3.12	30m 16s
Run tests on ubuntu-latest with Python 3.12	40m 55s
Run tests on ubuntu-latest with Python 3.12	31m 37s
	12h 58m 3s

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