update parallel XEB methods to support circuits instead of single gates #16456

Job	Run time
Format check	9s
Type check	1m 26s
Doc test	1m 41s
Changed files test	1m 15s
Lint check	4m 17s
Packaging test	1m 13s
Misc check	6s
Coverage check	9m 56s
Isolated pytest Ubuntu	8m 19s
Notebook formatting	12s
Build protos	16s
Pytest Ubuntu (3.10)	6m 18s
Pytest Ubuntu with NumPy-2 (3.10)	6m 32s
Shell check	8s
Pytest Ubuntu with NumPy-2 (3.11)	6m 33s
Pytest Ubuntu (3.11)	6m 0s
Pytest Ubuntu with NumPy-2 (3.12)	6m 38s
Pytest Ubuntu (3.12)	6m 19s
Pytest MacOS (3.10)	9m 8s
Pytest MacOS (3.11)	9m 25s
Pytest MacOS (3.12)	9m 28s
Notebook Tests against PR	9m 53s
Changed Notebooks Isolated Test against Cirq stable (partition-0)	47s
Changed Notebooks Isolated Test against Cirq stable (partition-1)	49s
Bundle file consistency	45s
Check consistency of requirements	20s
Changed Notebooks Isolated Test against Cirq stable (partition-2)	45s
Changed Notebooks Isolated Test against Cirq stable (partition-3)	51s
Typescript tests coverage	36s
Typescript lint check	35s
Typescript tests	38s
Pytest Windows (3.10)	8m 23s
Pytest Windows (3.11)	8m 24s
Pytest Windows (3.12)	8m 12s
	2h 16m 17s

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