Fix: Property layer visualization for HexGrid

[Sahil-Chhoker]

Summary

Property layers were not properly visualized for HexGrids, and this PR aims to resolve that issue. It utilizes the same coordinate system as the draw_hex_grid function and generates a PolyCollection that overlays color values on the grid.

Bug / Issue

fixes #2433

Before

After

Additional Notes:

I am not entirely sure if this was the best approach to address the issue. If there is a more effective or elegant solution, I would greatly appreciate your recommendations.

[github-actions]

Performance benchmarks:

Model	Size	Init time [95% CI]	Run time [95% CI]
BoltzmannWealth	small	🔵 -2.3% [-3.4%, -1.2%]	🔵 -1.8% [-2.3%, -1.3%]
BoltzmannWealth	large	🔵 -0.0% [-0.5%, +0.5%]	🔵 -0.3% [-0.8%, +0.4%]
Schelling	small	🔵 -0.6% [-1.0%, -0.2%]	🔵 -0.3% [-0.4%, -0.2%]
Schelling	large	🔵 -0.0% [-0.6%, +0.4%]	🔵 +2.9% [+1.6%, +4.1%]
WolfSheep	small	🔵 +0.0% [-0.4%, +0.5%]	🔵 +0.6% [+0.5%, +0.8%]
WolfSheep	large	🔵 +1.0% [+0.5%, +1.5%]	🔵 +2.3% [+0.5%, +4.4%]
BoidFlockers	small	🔵 -1.1% [-1.9%, -0.3%]	🔵 -0.1% [-0.4%, +0.1%]
BoidFlockers	large	🔵 +0.7% [+0.2%, +1.2%]	🔵 -0.1% [-0.5%, +0.2%]

[quaquel]

Thanks for this. The example looks great. I am taking a look at the code now.

[quaquel]

Just a few questions and ideas. Looks very good already.

[Sahil-Chhoker]

Are you sure it's fine as it is? I had a few questions about it:

1. Regarding the repetitive part, I think I’ve got an answer for now. I’ll get back to you as early as tomorrow.
2. I'm hardcoding the value of zorder to -1. Is this the correct approach?

[quaquel]

I gave it a first quick pass and focussed on the high-level stuff. The zorder one is a good question (and actually interacts with #2642). Ideally (but beyond this pr), zorder should become controllable for property layers to explicitly control layering.

[Sahil-Chhoker]

Thank you for the review! I have added the suggested changes. Please let me know if you have any additional recommendations to further improve the code quality.