Profile name text box under Shortcut Manager allows to create a name with special characters on Mac which are restricted on Windows.

Steps to reproduce:
1. Create a new project.
2. Go to Unity > Shortcuts.
3. Click on User Profile drop down on the upper left corner.
4. Click on Create new Profile.
5. Enter "******”.
6. Click on ‘Create' button.

Note:
1. While creating a Profile name, an Asterisk symbol (*) is restricted on Windows platform.
2. <,>,”,?,|, these are the few other special characters which are disallowed on Windows platform but allowed on Mac for Profile name.
3. Shortcut Manager was introduced in 2019.1.0.a4

Actual result:
Profile name created with “******”.

Expected Result:
‘Create’ button turns to non-interactive upon entering ‘*’.

Reproducible On:
2019.2.0a1, 2019.1.0a14, 2019.2.0a1

Environment:
Mac.