"TouchScreenKeyboard.isSupported" always returns true when the selected platform is WebGL

Reproduction steps:
1. Open the attached “IN-93683” project
2. Open the Build Settings (File > Build Settings)
3. Set “WebGL” as the selected Platform
4. Build and Run the project
5. Observe the Player console output

Expected result: “TouchScreenKeyboard.isSupported” prints out “false”
Actual result: “TouchScreenKeyboard.isSupported” prints out “true”, even when touch screen is not supported

Reproducible with: 2022.3.58f1, 6000.0.38f1, 6000.1.0b6

Reproducible on: Windows 10
Not reproducible on: No other environments tested