gh-126317: Simplify stdlib code by using itertools.batched() #131378

Job	Run time
Change detection / Compute changed files	9s
Check if Autoconf files are up to date	20s
Check if generated files are up to date	3m 25s
Docs	0s
Address sanitizer (ubuntu-22.04)	8m 57s
Ubuntu SSL tests with OpenSSL (ubuntu-22.04, 3.0.15)	2m 28s
Ubuntu SSL tests with OpenSSL (ubuntu-22.04, 3.1.7)	2m 29s
Windows MSI${{ '' }}	0s
CIFuzz	0s
Ubuntu SSL tests with OpenSSL (ubuntu-22.04, 3.2.3)	2m 59s
Ubuntu SSL tests with OpenSSL (ubuntu-22.04, 3.3.2)	3m 4s
Hypothesis tests on Ubuntu	5m 25s
Thread sanitizer / Thread sanitizer	4m 19s
WASI / build and test	6m 0s
Thread sanitizer (free-threading) / Thread sanitizer	7m 19s
macOS (free-threading) / build and test (ghcr.io/cirruslabs/macos-runner:sonoma)	5m 29s
macOS / build and test (macos-13)	9m 42s
macOS / build and test (ghcr.io/cirruslabs/macos-runner:sonoma)	4m 54s
Ubuntu / build and test (ubuntu-22.04)	7m 24s
Ubuntu (free-threading) / build and test (ubuntu-22.04)	9m 15s
Windows / build (arm64)	3m 31s
Windows (free-threading) / build (arm64)	2m 8s
Windows / build and test (Win32)	15m 31s
Windows (free-threading) / build and test (Win32)	23m 58s
Windows / build and test (x64)	15m 21s
Windows (free-threading) / build and test (x64)	23m 22s
All required checks pass	3s
	2h 47m 32s

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