Fix <option> rules for vertical writing mode

Bug: 338332443, 40086540
Change-Id: I21a32426428997e96cb61d080f19c746b5918832
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5506859
Reviewed-by: David Baron <dbaron@chromium.org>
Commit-Queue: Joey Arhar <jarhar@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1301409}

html/semantics/forms/the-select-element/stylable-select/resources/stylable-select-styles.css

@@ -29,8 +29,10 @@
  * They will either have to be specced or also added to the main test file.
  * TODO(crbug.com/1511354): Spec these UA styles. */
 .stylable-select-option {
-  min-height: 1.2em;
-  padding: 0px 2px 1px;
+  padding-inline: 2px;
+  padding-block-start: 0;
+  padding-block-end: 1px;
+  min-block-size: 1.2em;
   white-space: nowrap;
 }