Some core modules does not compile with Web Compiler

[zhpenkov]

Describe the bug
The Web Compiler Vs Code extension does not support some newly added sass functions like color.channel, resulting in
errors produce when trying to compile the theme.

https://marketplace.visualstudio.com/items?itemName=Failwyn.WebCompiler64

To reproduce
Steps to reproduce the behavior:

1. Create scss file
2. Use any kendo theme
3. Use the k-generate-color-variations() function
4. Compile the file with web compiler
5. see error

Expected behavior
The theme should compile without errors

Screenshots

Affected package (please remove the unneeded items)

• theme-default
• theme-bootstrap
• theme-material
• theme-core

Affected suites (please remove the unneeded items)

• Telerik UI for Blazor

Affected browsers (please remove the unneeded items)

• Not Applicable

Build system information (please remove the unneeded items)

• Not Applicable

Additional context
Add any other context about the bug.