Remove the limit of 3 keywords for the block registration (#13848)

* Fixes #11949: Error: The block "xxx" can have a maximum of 3 keywords.

* Fixes #11949: Error: The block "xxx" can have a maximum of 3 keywords.

* Fixes #11949: Error: The block xxx can have a maximum of 3 keywords.

docs/designers-developers/developers/block-api/block-registration.md

@@ -104,7 +104,7 @@ icon: {
 
 * **Type:** `Array`
 
-Sometimes a block could have aliases that help users discover it while searching. For example, an `image` block could also want to be discovered by `photo`. You can do so by providing an array of terms (which can be translated). It is only allowed to add as much as three terms per block.
+Sometimes a block could have aliases that help users discover it while searching. For example, an `image` block could also want to be discovered by `photo`. You can do so by providing an array of terms (which can be translated).
 
 ```js
 // Make it easier to discover a block with keyword aliases.

packages/blocks/src/api/registration.js

@@ -103,12 +103,6 @@ export function registerBlockType( name, settings ) {
 		);
 		return;
 	}
-	if ( 'keywords' in settings && settings.keywords.length > 3 ) {
-		console.error(
-			'The block "' + name + '" can have a maximum of 3 keywords.'
-		);
-		return;
-	}
 	if ( ! ( 'category' in settings ) ) {
 		console.error(
 			'The block "' + name + '" must have a category.'

packages/blocks/src/api/test/registration.js

@@ -119,13 +119,6 @@ describe( 'blocks', () => {
 			expect( block ).toBeUndefined();
 		} );
 
-		it( 'should reject blocks with more than 3 keywords', () => {
-			const blockType = { save: noop, keywords: [ 'apple', 'orange', 'lemon', 'pineapple' ], category: 'common', title: 'block title' },
-				block = registerBlockType( 'my-plugin/fancy-block-7', blockType );
-			expect( console ).toHaveErroredWith( 'The block "my-plugin/fancy-block-7" can have a maximum of 3 keywords.' );
-			expect( block ).toBeUndefined();
-		} );
-
 		it( 'should reject blocks without category', () => {
 			const blockType = { settingName: 'settingValue', save: noop, title: 'block title' },
 				block = registerBlockType( 'my-plugin/fancy-block-8', blockType );