Add missing expectation in hide money test

All the expectations checked after the `click_link "Check my votes"`
action were already true before clicking the link, meaning the test
could finish before the request did.

It's possible that this request caused a test run 8274, job 2 [1], since
a multitenancy test failed and a possible cause could have been
simultaneous requests to both a tenant subdomain and the application's
main domain. The failure was:

```
1) Multitenancy PostgreSQL extensions work for tenants
     Failure/Error: expect(page).to have_content "Proposal created
successfully."
       expected to find text "Proposal created successfully." in
       "Language: \n
       \nEnglish\nDeutsch\nEspañol\nFrançais\nNederlands\nPortuguês
       brasileiro\n中文\n       Notifications\nMy content\nMy account\nSign
       out\nDebates\nYou are in\nProposals\nVoting\nCollaborative
       legislation\nParticipatory budgeting\nSDG\nHelp\nProposals\nCreate new
       proposal\nHow do citizen proposals work?\nRecommendations for creating a
       proposal\nDo not use capital letters for the proposal title or for whole
       sentences. On the internet, this is considered shouting. And nobody
       likes being shouted at.\nAny proposal or comment suggesting illegal
       action will be deleted, as well as those intending to sabotage the
       debate spaces. Anything else is allowed.\nEnjoy this space and the
       voices that fill it. It belongs to you too.\n×\n1 error prevented this
       Proposal from being saved.\nPlease check the marked fields to know how
       to correct them:\nREQUIRED FIELDS\nProposal title\nProposal
       summary\n(maximum 200 characters)\ntsvector for María the
       Martian\nProposal text\n    Format\n    ◢\n  If you are human, ignore
       this field\nOPTIONAL FIELDS\nExternal video URL\nYou may add a link to
       YouTube or Vimeo\nDescriptive image\nYou can upload one image of
       following content types: jpg, up to 1 MB.\nAdd image\nDocuments\nYou can
       upload up to a maximum of 3 documents of following content types: pdf,
       up to 3 MB per file.\nAdd new document\nTags\nTag this proposal. You can
       choose from proposed categories or add your own\nCategories\n\nFull name
       of the person submitting the proposal\n(individually or as
       representative of a collective; will not be displayed publically)\ncan't
       be blank, is too short (minimum is 6 characters)\nSustainable
       Development Goals and Targets\nYou can choose one or several SDGs
       aligned with your citizen proposal\nGoals and Targets\nYou can introduce
       the code of a specific goal/target or a text to find one. For more
       information visit the SDG help page.\nI agree to the Privacy Policy and
       the Terms and conditions of use\nOpen government\nThis portal uses the
       CONSUL DEMOCRACY application which is open-source
       software.\nParticipation\nDecide how to shape the city you want to live
       in.\nCONSUL DEMOCRACY, 2024 Privacy Policy Terms and conditions of use
       Accessibility"
```

Note the `can't be blank, is too short` reference to the responsible
name, which is only checked when user verification is not skipped. In
this test, the `mars` tenant skips the verification while the default
tenant does not. The mentioned possibility of simultaneous requests
might have caused the issue.

[1] https://github.com/consuldemocracy/consuldemocracy/actions/runs/11747689680/job/32730131655

spec/system/budgets/ballots_spec.rb

@@ -697,6 +697,8 @@ describe "Ballots" do
       login_as(user)
       visit budget_investments_path(budget_hide_money, heading_id: heading_no_price.id)
 
+      expect(page).not_to have_content "Your ballot"
+
       within("#sidebar") do
         expect(page).to have_content investment_1.title
         expect(page).to have_content investment_2.title
@@ -706,6 +708,7 @@ describe "Ballots" do
         click_link "Check my votes"
       end
 
+      expect(page).to have_content "Your ballot"
       expect(page).to have_content investment_1.title
       expect(page).to have_content investment_2.title
       expect(page).not_to have_content investment_1.price