fix key nav on charts page

[aalves08]

Summary

Fixes #12783

Occurred changes and/or fixed issues

• Fixes keyboard navigation on the charts page
• Fixes Select component implementation so that it opens on enter/space and not open just on focus
• Fixes SelectIconGrid so that it allows for keyboard nav
• Fixes Carousel so that it allows for keyboard nav

Technical notes summary

There's a bug on the Rules tab in ingress create screen #13147 that is proven not to be related to any change of this PR. Ignore it if testing Select's on that area.

Areas or cases that should be tested

• test charts page
• test areas where SelectIconGrid is implemented (navlink groups, cluster provisioning, charts, auth provider)

Areas which could experience regressions

• Test Select's thoroughly throughout the UI, especially more "exotic" implementations. Basic use case should be covered.

Screenshot/Video

Checklist

• The PR is linked to an issue and the linked issue has a Milestone, or no issue is needed
• The PR has a Milestone
• The PR template has been filled out
• The PR has been self reviewed
• The PR has a reviewer assigned
• The PR has automated tests or clear instructions for manual tests and the linked issue has appropriate QA labels, or tests are not needed
• The PR has reviewed with UX and tested in light and dark mode, or there are no UX changes

[rak-phillip]

Most of the changes at the core of this PR are good, but it looks like quite a few changes from other PRs are represented here as well. Do we intend to rebase this after other PRs have merged?

[rak-phillip]

LGTM

[momesgin]

@aalves08 this has caused a regression for the repos dropdown on the Charts page