Table of contents: add spacing supports (#43368)

* Adding spacing block supports to table of contents * Now that the table of contents block has a block supports it will appear in the site editor block search results for the term 'header'. 'header' appears in the block.json description and is therefore a match.
WordPress · Aug 19, 2022 · 3102e12 · 3102e12
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commit 3102e12
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diff --git a/docs/reference-guides/core-blocks.md b/docs/reference-guides/core-blocks.md
@@ -788,7 +788,7 @@ Summarize your post with a list of headings. Add HTML anchors to Heading blocks
 
 -	**Name:** core/table-of-contents
 -	**Category:** layout
--	**Supports:** ~~html~~
+-	**Supports:** spacing (margin, padding), ~~html~~
 -	**Attributes:** headings, onlyIncludeCurrentPage
 
 ## Tag Cloud

diff --git a/packages/block-library/src/table-of-contents/block.json b/packages/block-library/src/table-of-contents/block.json
@@ -21,7 +21,11 @@
 		}
 	},
 	"supports": {
-		"html": false
+		"html": false,
+		"spacing": {
+			"margin": true,
+			"padding": true
+		}
 	},
 	"example": {}
 }
diff --git a/packages/e2e-tests/specs/site-editor/global-styles-sidebar.test.js b/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 );
 		} );
 	} );
 } );