Return a single results object instead of always a list - IonQ #19890

Job	Run time
Misc check	5s
Packaging test	1m 28s
Type check	1m 25s
Build protos	22s
Format check	18s
Changed files test	2m 10s
Shell check	9s
Lint check	2m 20s
Isolated pytest Ubuntu	2m 19s
Pytest Ubuntu (3.12)	2m 16s
Check consistency of requirements	24s
Doc test	1m 40s
Pytest Ubuntu (3.13)	2m 20s
Pytest Ubuntu (3.11)	2m 20s
Notebook formatting	13s
Pytest MacOS (3.11)	2m 24s
Bundle file consistency	30s
Pytest MacOS (3.13)	2m 24s
Notebook Tests against PR	2m 20s
Typescript lint check	30s
Pytest MacOS (3.12)	2m 8s
Typescript tests	36s
Pytest Windows (3.11)	2m 11s
Typescript tests coverage	29s
Pytest Windows (3.12)	2m 9s
Changed Notebooks Isolated Test against Cirq stable (partition-2)	58s
Changed Notebooks Isolated Test against Cirq stable (partition-0)	50s
Pytest Windows (3.13)	2m 8s
Changed Notebooks Isolated Test against Cirq stable (partition-3)	53s
Changed Notebooks Isolated Test against Cirq stable (partition-1)	48s
Coverage check	2m 19s
	43m 26s

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