Image Export tries to generate an unreasonably high-resolution image

[wisplite]

When trying to export an image of the atlas on my SMP which I've explored a long distance in, the mod tries to generate an image of an unreasonable size which causes the game to become soft locked.

To Reproduce Steps to reproduce the behavior:

1. Explore a large area of a world
2. Generate an image from within the atlas
3. See error.

Expected behavior I expected it to generate either a lower-res image or create multiple separate smaller images as to not crash the game.

Screenshots

Fabric version information (please complete the following information):

• Minecraft: 1.16.5
• Fabric Launcher: 0.11.6
• Fabric API: 0.33.1
• AntiqueAtlas: 5.4.4-fabric