Assertion Failed: Argument is `undefined` or `null` while open a file with .PNG ext

[KingMario]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version:
  Version: 1.102.0-insider
  Commit: e2a90e9
  Date: 2025-06-13T17:41:37.636Z
  Electron: 35.5.1
  ElectronBuildId: 11727614
  Chromium: 134.0.6998.205
  Node.js: 22.15.1
  V8: 13.4.114.21-electron.0

• OS Version:
  OS: Darwin arm64 24.5.0

Steps to Reproduce:

1. click a .PNG file from the file tree of explorer. No preview of the image is shown and an error occurs:

2. rename it to .png in lowercase letters. it's OK to view the file.

[bpasero]

Sounds a lot like #251245