GH-117195: Avoid assertion error in `object.sizeof` #113398

Job	Run time
Check for source changes	13s
Check if generated files are up to date	4m 59s
Address sanitizer	15m 37s
Ubuntu SSL tests with OpenSSL (1.1.1w)	1m 50s
Hypothesis tests on Ubuntu	6m 18s
CIFuzz (address)	18m 57s
Ubuntu SSL tests with OpenSSL (3.0.13)	2m 19s
CIFuzz (undefined)	20m 23s
Ubuntu SSL tests with OpenSSL (3.1.5)	1m 50s
CIFuzz (memory)	20m 27s
Ubuntu SSL tests with OpenSSL (3.2.1)	2m 10s
Windows / build and test (x86)	17m 51s
Windows / build and test (x64)	17m 1s
Windows / build (arm64)	3m 45s
Windows (free-threading) / build and test (x86)	21m 13s
macOS / build and test (macos-14)	10m 11s
macOS / build and test (macos-13)	10m 56s
macOS (free-threading) / build and test (macos-14)	7m 34s
Thread sanitizer / Thread sanitizer	4m 35s
Thread sanitizer (free-threading) / Thread sanitizer	7m 5s
Windows (free-threading) / build and test (x64)	19m 52s
Windows (free-threading) / build (arm64)	3m 37s
Ubuntu / build and test	11m 13s
Ubuntu (free-threading) / build and test	9m 15s
WASI / build and test	12m 19s
Docs / Docs	1m 59s
Docs / Docs (Oldest Sphinx)	2m 0s
Docs / Doctest	17m 2s
All required checks pass	1s
	4h 32m 32s

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