Assets with long paths fails to build on linux.

[Piotr Jaroszek]

Describe the bug
AssetProcessor on Linux (Ubuntu) returns an error when building an asset with a path longer than 260 chars.

Assets required
Any asset that has a path length > 260.

Steps to reproduce
Steps to reproduce the behavior:

1. Create a project with a very long path.
2. Run an asset processor for an asset that lives in the project.

Expected behavior
All assets are built correctly.

Actual behavior
Assets with long paths fail to build. The example error is:

AssetProcessor: JOB LOG: 25 Apr 2024 08:26:34 | ERROR | Cannot copy file: Product '/ver/long/path/to/asset/materialgraphname_mainpipeline_forwardpass_baselighting.azsl' path length (265) exceeds the max path length (260) allowed on disk from Error

Found in Branch
point-release/23103

Desktop/Device (please complete the following information):

• Device: PC
• OS: Ubuntu 22.04
• CPU Intel 13th gen
• GPU RTX 3070
• Memory 32GB

Additional context
The asset processor max path length is set to 260 (source), even for OSes that should be able to handle longer paths. Maybe the limit should only exist for Windows OSes?

[Karl Haubenwallner]

There is a preliminary fix here: #17719

[Steve Pham]

This should be fixed with #17719

[Steve Pham]

@pijaro Can you verify this is fixed with the latest from the development branch?