Fleet UI: Add software links go to relevant platform add software page

[RachelElysia]

Issue

Closes #37074

Description

Setup experience platform tabs now link to the specific Add software page related to the currently selected platform.

Checklist for submitter

If some of the following don't apply, delete the relevant line.

• [x] Changes file added for user-visible changes in changes/, orbit/changes/ or ee/fleetd-chrome/changes. See Changes files for more information.

Testing

• [x] QA'd all new/changed functionality manually

[RachelElysia]

@cdcme ty! I just realized I made 2 mistakes trying to clean things up 😅 should be a 30s re-review

[codecov[bot]]

Codecov Report

:x: Patch coverage is 50.00000% with 14 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 65.93%. Comparing base (2a56292) to head (5c64e33). :warning: Report is 29 commits behind head on main.

Files with missing lines	Patch %	Lines
...mponents/AddInstallSoftware/AddInstallSoftware.tsx	50.00%	14 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #37202      +/-   ##
==========================================
- Coverage   65.93%   65.93%   -0.01%     
==========================================
  Files        2329     2329              
  Lines      185060   185073      +13     
  Branches     7707     7813     +106     
==========================================
+ Hits       122016   122021       +5     
- Misses      51898    51906       +8     
  Partials    11146    11146              

Flag	Coverage Δ
frontend	54.19% <50.00%> (-0.01%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

:rocket: New features to boost your workflow:

• :snowflake: Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• :package: JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.