Fix embedded Rancher UI app charts page undefined error (POSTPONE to v1.4.3)

[a110605]

Summary

A function name typo in previous migration commit

cf1caaa#diff-1f070e7bd7aa5deaccbf4007dc3b9f76cfc32066e9cf9b96caeb27bb1343b8bd

Undefined error happens in

 showCarousel() {
      return this.chartMode === 'featured' && this.getFeaturedCharts.length;
    }

PR Checklist

• Is this a multi-tenancy feature/bug?
  • Yes, the relevant RBAC changes are at:
• Do we need to backport changes to the old Rancher UI, such as RKE1?
  • Yes, the relevant PR is at:
• Are backend engineers aware of UI changes?
  • Yes, the backend owner is:

Related Issue #
harvester/harvester#7673 (comment)

Screenshot/Video

After fix

fixed_demo.mov

[houhoucoop]

LGTM

[torchiaf]

LGTM