Update wpautop() Unit Tests to handle changes for figcaption, option, and select

[rachelbaker]

In #25646 figcaption and in #22230 option and select tags were removed from the wpautop block level elements. The related unit test from #25856 need a minor adjustment to account for the changes and pass as expected.

1) Tests_Formatting_Autop::test_that_wpautop_treats_block_level_elements_as_blocks
Failed asserting that two strings are equal.
--- Expected
+++ Actual
@@ @@
 <pre>foo</pre>
-<select>foo</select>
-<option>foo</option>
+<p><select>foo</select></p>
+<p><option>foo</option></p>

@@ @@
 <figure>foo</figure>
-<figcaption>foo</figcaption>
+<p><figcaption>foo</figcaption></p>
 <details>foo</details>
 <menu>foo</menu>
 <summary>foo</summary>'

[rachelbaker]

updated autop unit tests

[wonderboymusic]

In 28853:

Fix wpautop() unit tests. See #25646, #22230, #25856.

Props rachelbaker.
Fixes #28638.