web: fix promoted source button hover losing blue color (cherry-pick #19048 to version-2025.12)

[authentik-automation]

Cherry-pick of #19048 to version-2025.12 branch.

Original PR: #19048
Original Author: @dominic-r
Cherry-picked commit: 2a97dd2

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[netlify]

✅ Deploy Preview for authentik-docs ready!

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.28%. Comparing base (d60d06f) to head (46a83b2).
⚠️ Report is 1 commits behind head on version-2025.12.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@                 Coverage Diff                 @@
##           version-2025.12   #19100      +/-   ##
===================================================
+ Coverage            92.38%   93.28%   +0.89%     
===================================================
  Files                  946      946              
  Lines                52126    52126              
===================================================
+ Hits                 48157    48626     +469     
+ Misses                3969     3500     -469     

Flag	Coverage Δ
e2e	44.64% <ø> (+0.91%)	⬆️
integration	23.45% <ø> (?)
unit	91.55% <ø> (+<0.01%)	⬆️
unit-migrate	91.59% <ø> (+<0.01%)	⬆️

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[github-actions]

authentik PR Installation instructions

Instructions for docker-compose

Add the following block to your .env file:

AUTHENTIK_IMAGE=ghcr.io/goauthentik/dev-server
AUTHENTIK_TAG=gh-46a83b2820892fd141d3df073cce34a2de1fec90
AUTHENTIK_OUTPOSTS__CONTAINER_IMAGE_BASE=ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s

Afterwards, run the upgrade commands from the latest release notes.

Instructions for Kubernetes

Add the following block to your values.yml file:

authentik:
    outposts:
        container_image_base: ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s
global:
    image:
        repository: ghcr.io/goauthentik/dev-server
        tag: gh-46a83b2820892fd141d3df073cce34a2de1fec90

Afterwards, run the upgrade commands from the latest release notes.