react-icons: update rhds standard icons

[kmcfaul]

3em or 4em for the svg size (Brand says they typically recommend between 36px and 100px).
Brand color token for the fill color.

Update: Above changes will be handled in patternfly/patternfly#8071
This issue will now handle applying this new class from patternfly/patternfly#8071 for standard icons only.

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Jira Issue: PF-3163

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[patternfly-jira-sync]

Closed via Jira sync - Jira issue PF-3163 is closed.