PHP Snippet 1:
add_filter( 'use_widgets_block_editor', '__return_false' );
PHP Snippet 2:
remove_theme_support( 'widgets-block-editor' )
PHP Snippet 3:
// Disables the block editor from managing widgets in the Gutenberg plugin.
add_filter( 'gutenberg_use_widgets_block_editor', '__return_false', 100 );
// Disables the block editor from managing widgets. renamed from wp_use_widgets_block_editor
add_filter( 'use_widgets_block_editor', '__return_false' );
PHP Snippet 4:
// Disables the block editor from managing widgets in the Gutenberg plugin.
add_filter( 'gutenberg_use_widgets_block_editor', '__return_false', 100 );
// Disables the block editor from managing widgets.
add_filter( 'use_widgets_block_editor', '__return_false' );