Fix `terminal.style.spinner` config value (#1471) #2558

Job	Run time
Downstream builds with Python 3.8	35s
Python 3.8 on Linux	2m 3s
Downstream builds with Python 3.9	45s
CLI responsiveness with latest Python	2m 17s
Python 3.9 on Linux	2m 19s
Downstream builds with Python 3.10	37s
Python 3.10 on Linux	2m 18s
Downstream builds with Python 3.11	39s
Python 3.11 on Linux	2m 11s
Downstream builds with Python 3.12	41s
Python 3.12 on Linux	2m 40s
Python 3.8 on Windows	5m 44s
Python 3.9 on Windows	5m 31s
Python 3.10 on Windows	4m 46s
Python 3.11 on Windows	4m 35s
Python 3.12 on Windows	5m 18s
Python 3.8 on macOS	1m 45s
Python 3.9 on macOS	1m 12s
Python 3.10 on macOS	1m 11s
Python 3.11 on macOS	1m 20s
Python 3.12 on macOS	1m 19s
Report coverage	28s
check	1s
	50m 15s

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