gh-116099: Fix refcounting bug in `_queueobj_shared()` #104596

Job	Run time
Check for source changes	9s
Check if generated files are up to date	4m 54s
Ubuntu SSL tests with OpenSSL (1.1.1w)	1m 55s
Docs	0s
Ubuntu SSL tests with OpenSSL (3.0.13)	1m 57s
Ubuntu SSL tests with OpenSSL (3.1.5)	1m 58s
Ubuntu SSL tests with OpenSSL (3.2.1)	2m 1s
Address sanitizer	7m 29s
CIFuzz (address)	19m 20s
Hypothesis tests on Ubuntu	4m 12s
CIFuzz (undefined)	21m 3s
CIFuzz (memory)	22m 6s
Windows / build and test (x86)	13m 23s
Windows / build and test (x64)	14m 11s
Windows / build (arm64)	2m 52s
Windows (free-threading) / build and test (x64)	22m 26s
Windows (free-threading) / build (arm64)	2m 21s
Windows (free-threading) / build and test (x86)	22m 31s
macOS / build and test (macos-14)	8m 34s
Ubuntu / build and test	6m 8s
macOS (free-threading) / build and test (macos-14)	8m 30s
macOS / build and test (macos-13)	9m 49s
macOS (free-threading) / build and test (macos-13)	17m 8s
Ubuntu (free-threading) / build and test	8m 28s
All required checks pass	2s
	3h 43m 27s

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