Update RustFS logo assets

[GatewayJ]

Type of Change

• New Feature
• Bug Fix
• Documentation
• Performance Improvement
• Test/CI
• Refactor
• Other: Brand asset update

Related Issues

N/A

Summary of Changes

• Updated the Operator Console RustFS wordmark to the refreshed blue logo color.
• Replaced the default favicon with a compact RustFS R icon derived from the refreshed logo.

Checklist

• I have read and followed the CONTRIBUTING.md guidelines
• Passed make pre-commit (fmt-check + clippy + test + console-lint + console-fmt-check)
• Added/updated necessary tests: N/A, asset-only change
• Documentation updated (if needed): N/A
• CHANGELOG.md updated under [Unreleased] (if user-visible change): N/A, no CHANGELOG.md in this repository
• CI/CD passed (if applicable)

Impact

• Breaking change (CRD/API compatibility)
• Requires doc/config/deployment update
• Other impact: Operator Console branding assets only

Verification

make pre-commit

Additional Notes

N/A