Restore diagnostics test to old format

Author: krassowski

atest/01_Editor.robot

@@ -97,13 +97,13 @@ Editor Shows Features for Language
 Editor Should Show Diagnostics
     [Arguments]    ${diagnostic}
     Set Tags    feature:diagnostics
+    Wait Until Page Contains Element    css:.cm-lsp-diagnostic[title*="${diagnostic}"]    timeout=20s
     Capture Page Screenshot    01-diagnostics.png
     Open Diagnostics Panel
     Capture Page Screenshot    02-diagnostics.png
     ${count} =    Count Diagnostics In Panel
-    # Should Be True    ${count} >= 1
+    Should Be True    ${count} >= 1
     Close Diagnostics Panel
-    Wait Until Page Contains Element    css:.cm-lsp-diagnostic[title*="${diagnostic}"]    timeout=40s
 
 Editor Content Changed
     [Arguments]    ${old_content}