Bump Microsoft.Extensions.AI from 10.3.0 to 10.4.0 #2424

Job	Run time
build (macos-latest, Debug)	38s
build (ubuntu-latest, Release)	47s
build (windows-latest, Debug)	2m 56s
build (ubuntu-latest, Debug)	50s
build (macos-latest, Release)	54s
build (windows-latest, Release)	3m 40s
publish-coverage	0s
	9m 45s

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