pixi task list panics if any feature has non-compatible platforms

[hoxbro]

Checks

• I have checked that this issue has not already been reported.

• I have confirmed this bug exists on the latest version of pixi, using pixi --version.

Reproducible example

pixi task list
pixi task list -e test-unit

[project]
name = "test"
channels = ["conda-forge"]
platforms = ["linux-64", "osx-arm64", "osx-64", "win-64"]

[tasks]
install = 'python -m pip install --no-deps --disable-pip-version-check -e .'

[environments]
test-gpu = ["test-gpu"]
test-unit = ["test-unit"]

[feature.test-unit.tasks]
test-unit = "echo test-unit"

[feature.test-gpu]
# platforms = ["linux-64"]   # Works if on Linux
platforms = ["win-64"]   # Fails if on Linux

[feature.test-gpu.tasks]
test-gpu = "echo test-gpu"

Issue description

pixi task list fails if any feature has non-compatible platforms. Currently, it panics:

Expected behavior

Either hide non-compatible platforms task or show them with a message they are not available on the users platform