Editor: Material Editor can break .shader files

[eprikazchikov]

Description

Material Editor can break .shader files

Prerequisites

Create a valid .shader file

Steps to Reproduce

1. Double click on this file in Content Browser
2. The editor will open Material Editor
3. Save result

Expected behavior:

Material Editor shouldn't be open because .shader file is not graph based format

Actual behavior:

File broken on step 3

Reproducibility:

100%

Versions

2023.2

Additional Information

n/a