Add missing expectations in hidden content tests

We were checking that we still were on the same page, which was true
even before finishing the request to restore the content.

spec/system/admin/hidden_budget_investments_spec.rb

@@ -81,8 +81,11 @@ describe "Admin hidden budget investments", :admin do
 
     visit admin_hidden_budget_investments_path(filter: "with_confirmed_hide", page: 2)
 
+    expect(page).to have_css "tbody tr", count: 2
+
     accept_confirm { click_button "Restore", match: :first, exact: true }
 
+    expect(page).to have_css "tbody tr", count: 1
     expect(page).to have_current_path(/filter=with_confirmed_hide/)
     expect(page).to have_current_path(/page=2/)
   end

spec/system/admin/hidden_comments_spec.rb

@@ -130,8 +130,11 @@ describe "Admin hidden comments", :admin do
 
     visit admin_hidden_comments_path(filter: "with_confirmed_hide", page: 2)
 
+    expect(page).to have_css "tbody tr", count: 2
+
     accept_confirm("Are you sure? Restore") { click_button "Restore", match: :first, exact: true }
 
+    expect(page).to have_css "tbody tr", count: 1
     expect(page).to have_current_path(/filter=with_confirmed_hide/)
     expect(page).to have_current_path(/page=2/)
   end

spec/system/admin/hidden_debates_spec.rb

@@ -70,8 +70,11 @@ describe "Admin hidden debates", :admin do
 
     visit admin_hidden_debates_path(filter: "with_confirmed_hide", page: 2)
 
+    expect(page).to have_css "tbody tr", count: 2
+
     accept_confirm("Are you sure? Restore") { click_button "Restore", match: :first, exact: true }
 
+    expect(page).to have_css "tbody tr", count: 1
     expect(page).to have_current_path(/filter=with_confirmed_hide/)
     expect(page).to have_current_path(/page=2/)
   end

spec/system/admin/hidden_proposals_spec.rb

@@ -83,8 +83,11 @@ describe "Admin hidden proposals", :admin do
 
     visit admin_hidden_proposals_path(filter: "with_confirmed_hide", page: 2)
 
+    expect(page).to have_css "tbody tr", count: 2
+
     accept_confirm("Are you sure? Restore") { click_button "Restore", match: :first, exact: true }
 
+    expect(page).to have_css "tbody tr", count: 1
     expect(page).to have_current_path(/filter=with_confirmed_hide/)
     expect(page).to have_current_path(/page=2/)
   end

spec/system/admin/hidden_users_spec.rb

@@ -85,10 +85,13 @@ describe "Admin hidden users", :admin do
 
     visit admin_hidden_users_path(filter: "with_confirmed_hide", page: 2)
 
+    expect(page).to have_css "tbody tr", count: 2
+
     accept_confirm("Are you sure? Restore \"#{users[-3].name}\"") do
       click_button "Restore", match: :first, exact: true
     end
 
+    expect(page).to have_css "tbody tr", count: 1
     expect(page).to have_current_path(/filter=with_confirmed_hide/)
     expect(page).to have_current_path(/page=2/)
   end

spec/system/admin/proposal_notifications_spec.rb

@@ -80,8 +80,11 @@ describe "Admin proposal notifications", :admin do
 
     visit admin_hidden_proposal_notifications_path(filter: "with_confirmed_hide", page: 2)
 
+    expect(page).to have_css "tbody tr", count: 2
+
     accept_confirm("Are you sure? Restore") { click_button "Restore", match: :first, exact: true }
 
+    expect(page).to have_css "tbody tr", count: 1
     expect(page).to have_current_path(/filter=with_confirmed_hide/)
     expect(page).to have_current_path(/page=2/)
   end