fix(docs-infra): prevent inline code in table headers from wrapping mid-word

When a documentation table has a wide content column, the narrow header
columns get squeezed and inline-code header labels break mid-word at
their hyphens. On the MCP server tools page this rendered the `local-only`
and `read-only` column headers as `local-` / `only` and `read-` / `only`.

Apply `white-space: nowrap` to `code` inside `th` so header tokens stay on
a single line. The rule is scoped to headers, whose labels are always
short, so long code signatures in body cells continue to wrap and no
table gains a horizontal scrollbar.

(cherry picked from commit 50bb0d6bfe)

adev/shared-docs/styles/docs/_table.scss

@@ -20,6 +20,10 @@
       border-block: 1px solid var(--senary-contrast);
       font-size: 0.75rem;
       font-weight: 600;
+
+      code {
+        white-space: nowrap;
+      }
     }
 
     tr {