FIX: fix `is_integer()` bug for QRules v0.10.4 #722

Job	Run time
pytest / Determine job matrix	9s
style / Determine skipped pre-commit hooks	9s
doc / nb / Execute and build documentation	52s
doc / linkcheck / Check external links	49s
style / Run local pre-commit hooks	43s
pytest / Run unit tests (3.10, ubuntu-24.04)	48s
pytest / Run unit tests (3.11, ubuntu-24.04)	46s
pytest / Run unit tests (3.13, ubuntu-24.04)	47s
pytest / Run unit tests (3.9, ubuntu-24.04)	48s
pytest / Run unit tests (3.12, ubuntu-24.04, ampform)	45s
pytest / Run unit tests (3.9, macos-14)	49s
doc / Upload to GitHub Pages	1s
style / Push changes	1s
	7m 27s

Provide feedback