meson prints "Unknown TAP version. The first line MUST be `TAP version <int>`. Assuming version 12." for every test
Description of problem:
Run 'make check V=1' and observe that every test causes an warning message about an unknown TAP version

```
>>> G_TEST_SRCDIR=/home/berrange/src/virt/qemu/tests/unit MALLOC_PERTURB_=61 G_TEST_BUILDDIR=/home/berrange/src/virt/qemu/build/tests/unit /home/berrange/src/virt/qemu/build/tests/unit/test-shift128 --tap -k
▶ 22/44 /host-utils/test_lshift                       OK            
▶ 22/44 /host-utils/test_rshift                       OK            
22/44 qemu:unit / test-shift128                       OK              0.01s   2 subtests passed

Unknown TAP version. The first line MUST be `TAP version <int>`. Assuming version 12.

```

This message comes from inside meson

```
$ rpm -ql meson | xargs grep 'Unknown TAP version' 2>/dev/null
/usr/lib/python3.11/site-packages/mesonbuild/mtest.py:            self.warnings.append('Unknown TAP version. The first line MUST be `TAP version <int>`. Assuming version 12.')
```

This is with meson-1.0.0-1.fc38.noarch
Steps to reproduce:
1. make check V=1