Only display Show all for reviewers previous reviews if there's mor…

…e to show (#4221)

This behaviors reflects the `Show all` logic of the other dashboard
submission table partial implementations

hypha/apply/dashboard/templates/dashboard/reviewer_dashboard.html

@@ -42,9 +42,11 @@ <h3 class="text-xl mb-2">Your previous reviews</h3>
 
                 {% include "submissions/partials/submissions-inline.html" with submissions=my_reviewed.table.data row_layout="table" %}
 
-                <div class="border-x border-b flex items-center justify-center py-3 font-semibold">
-                    <a href="{{ my_reviewed.url }}?query=reviewed-by:@me">{% trans "Show all" %}</a>
-                </div>
+                {% if my_reviewed.display_more %}
+                    <div class="border-x border-b flex items-center justify-center py-3 font-semibold">
+                        <a href="{{ my_reviewed.url }}?query=reviewed-by:@me">{% trans "Show all" %}</a>
+                    </div>
+                {% endif %}
             </div>
         {% endif %}