Tests

gh-81520: Add documentatoion about unexpected os.path.ismount() behaviour #160230

Job	Run time
Change detection / Create context from changed files	12s
Ubuntu ${{ fromJSON(matrix.free-threading) && '(free-threading)' \|\| '' }} ${{ fromJSON(matrix.bolt) && '(bolt)' \|\| '' }}	0s
Docs / Docs	1m 49s
Address sanitizer	0s
Hypothesis tests on Ubuntu	0s
Windows ${{ fromJSON(matrix.free-threading) && '(free-threading)' \|\| '' }}	0s
Check if Autoconf files are up to date	0s
Windows MSI${{ '' }}	0s
Cross build Linux	0s
Undefined behavior sanitizer	0s
Docs / Doctest	5m 45s
CIFuzz	0s
Check if generated files are up to date	0s
Thread sanitizer ${{ fromJSON(matrix.free-threading) && '(free-threading)' \|\| '' }}	0s
Ubuntu SSL tests with OpenSSL	0s
macOS ${{ fromJSON(matrix.free-threading) && '(free-threading)' \|\| '' }}	0s
WASI	0s
All required checks pass	5s
	7m 51s

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