Replace OpTree with OP_TREE #16694

Job	Run time
Changed files test	1m 27s
Coverage check	11m 45s
Build protos	14s
Doc test	1m 38s
Format check	8s
Isolated pytest Ubuntu	8m 8s
Lint check	4m 24s
Pytest MacOS (3.10)	11m 31s
Type check	1m 24s
Pytest MacOS (3.11)	10m 51s
Notebook formatting	10s
Notebook Tests against PR	10m 40s
Pytest MacOS (3.12)	10m 59s
Changed Notebooks Isolated Test against Cirq stable (partition-0)	1m 1s
Check consistency of requirements	30s
Changed Notebooks Isolated Test against Cirq stable (partition-1)	54s
Pytest Ubuntu (3.10)	6m 57s
Packaging test	1m 14s
Changed Notebooks Isolated Test against Cirq stable (partition-2)	54s
Pytest Ubuntu (3.11)	6m 0s
Changed Notebooks Isolated Test against Cirq stable (partition-3)	47s
Pytest Ubuntu (3.12)	6m 18s
Pytest Ubuntu with NumPy-2 (3.10)	6m 49s
Misc check	6s
Shell check	5s
Pytest Ubuntu with NumPy-2 (3.11)	5m 46s
Bundle file consistency	43s
Pytest Ubuntu with NumPy-2 (3.12)	6m 10s
Typescript tests coverage	37s
Typescript tests	38s
Typescript lint check	32s
Pytest Windows (3.10)	11m 0s
Pytest Windows (3.11)	8m 47s
Pytest Windows (3.12)	8m 35s
	2h 27m 42s

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