Editor:

- Fix keeping text selection and scroll position when there are embeds from URL.
- Add editor setting to disable keeping selection and scroll position.
- Remove dependency on Underscore.js.
- Fix error in the Text widget editor.

Props biskobe.
Fixes #42059, see #40854.

git-svn-id: https://develop.svn.wordpress.org/trunk@41783 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-editor.php

@@ -981,6 +981,7 @@ final class _WP_Editors {
 			'end_container_on_empty_block' => true,
 			'wpeditimage_html5_captions' => true,
 			'wp_lang_attr' => get_bloginfo( 'language' ),
+			'wp_keep_scroll_position' => false,
 			'wp_shortcut_labels' => wp_json_encode( $shortcut_labels ),
 		);