[HUB] Windows Build Support is not visible on opening the "Target Platform" dropdown list in Hub.

Windows Build Support is not visible on opening the "Target Platform" dropdown list in Hub.

Steps to Reproduce:
1. Install Unity along with Windows Build Support(Mono).
2. Create a new project or select an existing one.
3. Close unity editor(only if a new project was created).
4. Open HUB.
5. Select the Target Platform dropdown list for the respective project.

Actual Result:
Installed Windows build Support is not visible.

Expected Result:
Installed Windows build Support should be visible.

Reproducible on:
2020.1.0a11, 2019.3.0b9, 2018.4.12f1(LTS), 2017.1.5f1

Environment:
Mac 10.14.6 and Linux (Ubuntu 18.04.3 LTS)