Use correct favicon and use provided link to package

[Steve-Mcl]

Description

This pull request updates the PackageResourceCard.vue component to use the correct favicon for a package and to use the link provided by the resource (if supplied)

Related Issue(s)

closes #6669

Checklist

• I have read the contribution guidelines
• Suitable unit/system level tests have been added and they pass
• Documentation has been updated
  • Upgrade instructions
  • Configuration details
  • Concepts
• Changes flowforge.yml?
  • Issue/PR raised on FlowFuse/helm to update ConfigMap Template
  • Issue/PR raised on FlowFuse/CloudProject to update values for Staging/Production
• Link to Changelog Entry PR, or note why one is not needed.

Labels

• Includes a DB migration? -> add the area:migration label

[Steve-Mcl]

E2E test fail on completely untouched/unrelated code:

  Running:  devices/settings/environment.spec.js                                          (45 of 49)


  FlowFuse - Device - Settings Environment
    1) can add, remove mark as hidden instance environment variables


  0 passing (4s)
  1 failing

  1) FlowFuse - Device - Settings Environment
       can add, remove mark as hidden instance environment variables:
     TypeError: The following error originated from your application code, not from Cypress.

  > Cannot read properties of null (reading 'classList')

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.66%. Comparing base (caa8232) to head (96bf6ef).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6678   +/-   ##
=======================================
  Coverage   76.66%   76.66%           
=======================================
  Files         398      398           
  Lines       20103    20103           
  Branches     4841     4841           
=======================================
  Hits        15411    15411           
  Misses       4692     4692           

Flag	Coverage Δ
backend	76.66% <ø> (ø)

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