[core] Fix PR #32830 for fixed extensionless output template #904

Job	Run time
Linter	16s
Select tests from inputs	1s
Run tests (ubuntu-20.04, 2.6, cpython, core, sh)	1m 16s
Run tests (ubuntu-20.04, 2.7, cpython, core, sh)	1m 4s
Run tests (ubuntu-20.04, 3.2, cpython, core, sh)	1m 11s
Run tests (ubuntu-20.04, 3.3, cpython, core, sh)	1m 6s
Run tests (ubuntu-20.04, 3.4, cpython, core, sh)	1m 7s
Run tests (ubuntu-20.04, 3.5, cpython, core, sh)	1m 4s
Run tests (ubuntu-20.04, 3.6, cpython, core, sh)	1m 16s
Run tests (ubuntu-20.04, 3.7, cpython, core, sh)	1m 1s
Run tests (ubuntu-20.04, 3.8, cpython, core, sh)	57s
Run tests (ubuntu-20.04, 3.9, cpython, core, sh)	59s
Run tests (ubuntu-20.04, 3.10, cpython, core, sh)	59s
Run tests (ubuntu-20.04, 3.11, cpython, core, sh)	55s
Run tests (ubuntu-20.04, 3.12, cpython, core, sh)	1m 1s
Run tests (ubuntu-20.04, pypy-2.7, cpython, core, sh)	2m 31s
Run tests (ubuntu-20.04, pypy-3.6, cpython, core, sh)	2m 39s
Run tests (ubuntu-20.04, pypy-3.7, cpython, core, sh)	2m 29s
Run tests (windows-2019, 3.4, cpython, core, bat)	2m 0s
Run tests (windows-2019, 3.4, cpython, nodownload, bat)	46s
Run tests (ubuntu-20.04, 2.7, jython, core, sh)	3m 18s
Run tests (ubuntu-20.04, 2.7, jython, nodownload, sh)	24s
	28m 20s

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