Tests

gh-127305: more detailed doc for `register_error`'s error_handler #168403

Job	Run time
Change detection / Create context from changed files	12s
Windows ${{ fromJSON(matrix.free-threading) && '(free-threading)' \|\| '' }}	0s
Ubuntu SSL tests with OpenSSL	0s
CIFuzz	0s
Check if generated files are up to date	0s
Windows MSI${{ '' }}	0s
Check if Autoconf files are up to date	0s
Android (${{ matrix.arch }})	0s
macOS ${{ fromJSON(matrix.free-threading) && '(free-threading)' \|\| '' }}	-1s
Cross build Linux	-1s
Hypothesis tests on Ubuntu	-1s
Address sanitizer	-1s
Ubuntu SSL tests with AWS-LC	-1s
Sanitizers${{ '' }}	-1s
WASI	-1s
Ubuntu ${{ fromJSON(matrix.free-threading) && '(free-threading)' \|\| '' }} ${{ fromJSON(matrix.bolt) && '(bolt)' \|\| '' }}	-1s
Docs / Docs	1m 52s
Docs / Doctest	8m 28s
Docs / Check EPUB	2m 4s
All required checks pass	3s
	12m 31s

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