enable left/right native event on input number field

Author: t-hamano

packages/block-editor/src/components/writing-flow/use-arrow-nav.js

@@ -57,6 +57,7 @@ export function isNavigationCandidate( element, keyCode, hasModifier ) {
 		const simpleInputTypes = [
 			'button',
 			'checkbox',
+			'number',
 			'color',
 			'file',
 			'image',

packages/e2e-tests/specs/editor/various/toolbar-roving-tabindex.test.js

@@ -101,10 +101,7 @@ describe( 'Toolbar roving tabindex', () => {
 
 	it( 'ensures table block toolbar uses roving tabindex', async () => {
 		await insertBlock( 'Table' );
-		// Focus "Create Table" button in advance because the block wrapper doesn't get
-		// focus when Up Arrow is pressed in input number field.
-		await page.keyboard.press( 'Tab' );
-		await page.keyboard.press( 'Tab' );
+		await page.keyboard.press( 'ArrowLeft' );
 		await testBlockToolbarKeyboardNavigation( 'Block: Table', 'Table' );
 		// Move focus to the first toolbar item.
 		await page.keyboard.press( 'Home' );