Now that the table of contents block has a block supports it will app…

…ear in the site editor block search results for the term 'header'. 'header' appears in the block.json description and is therefore a match.

packages/e2e-tests/specs/site-editor/global-styles-sidebar.test.js

@@ -36,7 +36,8 @@ describe( 'Global styles sidebar', () => {
 			const results = await page.$$(
 				'.edit-site-block-types-item-list div[role="listitem"]'
 			);
-			expect( results.length ).toEqual( 1 );
+			// Matches both Heading and Table of Contents blocks. (The latter contains "heading" in its description.)
+			expect( results.length ).toEqual( 2 );
 		} );
 	} );
 } );