Fix flakey test

Sometimes "FE" ends up in the claim reference and so is visible in the
tabble more than twice. To fix this we need to specifically look in the
policy short names column.

spec/features/admin/admin_claims_filtering_spec.rb

@@ -49,10 +49,12 @@
 
     click_on "View claims"
 
-    expect(page.find("table")).to have_content("ECP").exactly(10).times
-    expect(page.find("table")).to have_content("TSLR").exactly(7).times
-    expect(page.find("table")).to have_content("STRI").exactly(2).times
-    expect(page.find("table")).to have_content("FE").exactly(2).times
+    policy_names = page.all("table tr td:nth-of-type(3)").map(&:text)
+
+    expect(policy_names).to include("ECP").exactly(10).times
+    expect(policy_names).to include("TSLR").exactly(7).times
+    expect(policy_names).to include("STRI").exactly(2).times
+    expect(policy_names).to include("FE").exactly(2).times
 
     click_on "View claims"
     select "Student Loans", from: "policy"