Complete initial implementation of global tokens

[nicolethoen]

This should build on the work done in https://github.com/patternfly/patternfly/pull/5482

Definition of done

• [x] Core global variables are updated to match tokens shared with the design kit.
• [x] Components using global variables are updated with new tokens.

### Tasks
- [ ] https://github.com/patternfly/patternfly/issues/5671

[andrew-ronaldson]

Closed with issue 5671