Reproduction steps:
1. Open the attached “EnvironmentSampleIssue” project
2. Open the “Assets/Scenes/SampleScene” Scene
3. In the Lighting settings (Window > Rendering > Lighting), select the Scene tab
4. Under the Lightmapping Settings, set the “Environment Samples” value to higher than 2048 (e.g. 10000)

Expected result: The set higher value is saved
Actual result: The value is reset to 2048

Reproducible with: 2022.1.0a13, 2022.3.57f1, 6000.0.37f1, 6000.1.0b5, 6000.2.0a2
Not reproducible with: 2021.3.48f1, 2022.1.0a12

Reproducible on: macOS Sequoia 15.3 (M1 Max), Windows 11
Not reproducible on: No other environments tested

Note: “Direct Samples” and “Indirect Samples” values can be set higher than the max slider value, contrary to “Environment samples”