Review form incorrect label association

[anevins]

The majority of labels in the Review form are correctly associated with their form fields, with the exception of the "Topic Type" field:

<label for="bbp_stick_topic">Topic Type:</label>
<select name="bbp_stick_topic" id="bbp_stick_topic_select">

Review form example: ​https://wordpress.org/support/plugin/akismet/reviews/#wp-toolbar

[SergeyBiryukov]

In 5027:

Support Theme: Use correct attribute to associate "Topic Type" label with the dropdown.

Props anevins.
Fixes #2545.