Reproduction steps:
1. Open "ReproProject"
2. Select the “Assets/Texture With Alpha“ Texture
3. Change the Format in WebGL settings to “RGB + 1-bit Alpha Compressed ETC2 4 bits“ in the Inspector window
4. Press the “Apply” button in the Inspector window
5. Press the “Retry“ button in the popup window

Expected result: The Texture is compressed in the “RGB + 1-bit Alpha Compressed ETC2 4 bits“ Format
Actual result: Editor crashes

Reproducible with: 2021.3.35f1, 2022.3.20f1, 2023.2.10f1, 2023.3.0b7

Reproducible on: Windows 11 Pro (22H2), macOS 14.3.1 (M1 Max)
Not reproducible on: No other environment tested

Notes:
The issue does not reproduce with "Assets/Texture Without Alpha" Texture
On macOS 14.3.1 (M1 Max) the issue reproduces on step 4, there is no popup window

First few lines of the stack trace:

{noformat}0x00007FFCF245BD61 (etccompress) libetc_init
0x00007FFCF2446933 (etccompress) libetc_init
0x00007FFCF24334AF (etccompress) libetc_init
0x00007FFCF243268E (etccompress) libetc_init
0x00007FFCF2430588 (etccompress) libetc_init
0x00007FFCF24301A1 (etccompress) libetc_compress
0x00007FFCB60CE2F4 (Unity) <lambda_0d29ec98361f12fd5b474f39be62f9f1>::operator(){noformat}