Query Title: Add levelOptions attribute to control available heading levels

docs/reference-guides/core-blocks.md

@@ -775,7 +775,7 @@ Display the query title. ([Source](https://github.com/WordPress/gutenberg/tree/t
 -	**Name:** core/query-title
 -	**Category:** theme
 -	**Supports:** align (full, wide), color (background, gradients, text), interactivity (clientNavigation), spacing (margin, padding), typography (fontSize, lineHeight), ~~html~~
--	**Attributes:** level, showPrefix, showSearchTerm, textAlign, type
+-	**Attributes:** level, levelOptions, showPrefix, showSearchTerm, textAlign, type
 
 ## Quote
 

packages/block-library/src/query-title/block.json

@@ -17,6 +17,9 @@
 			"type": "number",
 			"default": 1
 		},
+		"levelOptions": {
+			"type": "array"
+		},
 		"showPrefix": {
 			"type": "boolean",
 			"default": true

packages/block-library/src/query-title/edit.js

@@ -25,7 +25,14 @@ import { useArchiveLabel } from './use-archive-label';
 const SUPPORTED_TYPES = [ 'archive', 'search' ];
 
 export default function QueryTitleEdit( {
-	attributes: { type, level, textAlign, showPrefix, showSearchTerm },
+	attributes: {
+		type,
+		level,
+		levelOptions,
+		textAlign,
+		showPrefix,
+		showSearchTerm,
+	},
 	setAttributes,
 } ) {
 	const { archiveTypeLabel, archiveNameLabel } = useArchiveLabel();
@@ -130,6 +137,7 @@ export default function QueryTitleEdit( {
 			<BlockControls group="block">
 				<HeadingLevelDropdown
 					value={ level }
+					options={ levelOptions }
 					onChange={ ( newLevel ) =>
 						setAttributes( { level: newLevel } )
 					}