i18n: Add context to labels related to CSS position properties (#49135)

* i18n: Add context to CSS position property labels

* Update packages/block-editor/src/hooks/position.js

Co-authored-by: Dominik Schilling <dominikschilling+git@gmail.com>

* Update packages/block-editor/src/hooks/position.js

Co-authored-by: Dominik Schilling <dominikschilling+git@gmail.com>

---------

Co-authored-by: Dominik Schilling <dominikschilling+git@gmail.com>

Author: t-hamano

packages/block-editor/src/hooks/position.js

@@ -6,7 +6,7 @@ import classnames from 'classnames';
 /**
  * WordPress dependencies
  */
-import { __, sprintf } from '@wordpress/i18n';
+import { __, _x, sprintf } from '@wordpress/i18n';
 import { getBlockSupport, hasBlockSupport } from '@wordpress/blocks';
 import {
 	BaseControl,
@@ -49,7 +49,7 @@ const DEFAULT_OPTION = {
 const STICKY_OPTION = {
 	key: 'sticky',
 	value: 'sticky',
-	name: __( 'Sticky' ),
+	name: _x( 'Sticky', 'Name for the value of the CSS position property' ),
 	className: OPTION_CLASSNAME,
 	__experimentalHint: __(
 		'The block will stick to the top of the window instead of scrolling.'
@@ -59,7 +59,7 @@ const STICKY_OPTION = {
 const FIXED_OPTION = {
 	key: 'fixed',
 	value: 'fixed',
-	name: __( 'Fixed' ),
+	name: _x( 'Fixed', 'Name for the value of the CSS position property' ),
 	className: OPTION_CLASSNAME,
 	__experimentalHint: __(
 		'The block will not move when the page is scrolled.'