build(aio): move "see also" block to export-base template (#22681)

This makes it easier for all the API docs to display "see also" links
in a consitent manner.

PR Close #22681

aio/tools/transforms/templates/api/export-base.template.html

@@ -5,6 +5,7 @@
   {% include "includes/security-notes.html" %}
   {% include "includes/deprecation.html" %}
   {% block overview %}{% endblock %}
+  {% include "includes/see-also.html" %}
   {% block details %}{% endblock %}
   {% include "includes/usageNotes.html" %}
 {% endblock %}

aio/tools/transforms/templates/api/includes/class-overview.html

@@ -6,5 +6,4 @@
 }
 </code-example>
 {$ descendants.renderDescendants(doc, 'class', 'Subclasses') $}
-{% include "includes/see-also.html" %}
 </section>

aio/tools/transforms/templates/api/includes/interface-overview.html

@@ -8,5 +8,4 @@ interface {$ doc.name $}{$ doc.typeParams | escape $}{$ memberHelper.renderHerit
 </code-example>
 {$ descendants.renderDescendants(doc, 'interface', 'Child Interfaces') $}
 {$ descendants.renderDescendants(doc, 'class', 'Class Implementations') $}
-{% include "includes/see-also.html" %}
 </section>