Fix angle brackets in MouseButtonEvent and MouseWheel #1256

Job	Run time
mypy	28s
ruff	7s
sdist	3m 43s
parse_sdl (macos-latest, 3.2.16)	20s
parse_sdl (windows-latest, 3.2.16)	50s
test-docs	4m 8s
build (ubuntu-latest, pypy-3.10, x64)	5m 52s
build (ubuntu-latest, 3.10, x64)	7m 39s
build (windows-latest, 3.10, x64)	2m 34s
build (windows-latest, pypy-3.10, x64)	3m 29s
build-macos (cp310-*_universal2)	1m 48s
build (windows-latest, 3.10, x86)	3m 3s
tox (ubuntu-latest)	4m 12s
build-macos (pp310-*)	3m 31s
pyodide	4m 57s
build (windows-latest, pypy-3.10, x86)	3m 36s
linux-wheels (x86_64, pp310-manylinux*)	3m 27s
linux-wheels (x86_64, cp310-manylinux*)	4m 1s
linux-wheels (aarch64, pp310-manylinux*)	3m 19s
linux-wheels (aarch64, cp310-manylinux*)	3m 56s
publish	0s
	1h 5m 0s

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