Block Editor: Update packages and backport the latest Gutenberg fixes.

This includes the following fixes:

- Generate babel polyfill dynamically WordPress/gutenberg#31279
- Improve the List View component WordPress/gutenberg#31290 WordPress/gutenberg#32063
- Template mode:
    - Fix embed dimensions WordPress/gutenberg#32057
    - Update the welcome guide WordPress/gutenberg#32055 WordPress/gutenberg#32026
    - Don’t display the notice at the same time as the welcome guide WordPress/gutenberg#32076
    - Remove MetaBoxes WordPress/gutenberg#32315
    - Update the title area WordPress/gutenberg#32037 
- Widgets Screen:
    - Fix unsaved changes WordPress/gutenberg#31757
    - Fix toolbar alignment WordPress/gutenberg#31991
    - Fix block toolbar position after scroll WordPress/gutenberg#32212
    - Fix the visible widget area header WordPress/gutenberg#32262
    - Fix legacy widgets preview WordPress/gutenberg#32260
    - 
- Block Widgets in the customizer: 
    - Fix customizer title overlapping block toolbar WordPress/gutenberg#32140
    - Fix styling issues WordPress/gutenberg#32072
    - Fix escape key events WordPress/gutenberg#32175
    - Add preferences menu group label WordPress/gutenberg#32259
    - Fix creating and replacing legacy widgets WordPress/gutenberg#32005
    - Fix the welcome guide’s image WordPress/gutenberg#32264 WordPress/gutenberg#32302 
- Fix Cover to Image transform duotone error WordPress/gutenberg#32006
- Remove filter_var usage from blocks WordPress/gutenberg#32046 
- Fix image width for aligned Post Featured Image block WordPress/gutenberg#32070
- Prevent excessive Image block re-rendering WordPress/gutenberg#32102
- Remove gutenberg domain from core blocks WordPress/gutenberg#32152
- Use the block editor context class for the the different settings filters WordPress/gutenberg#32159
- Fix Latest Posts block grid view WordPress/gutenberg#32160
- Fix preset classes generation per block WordPress/gutenberg#32190
- Fix logic to enable custom colors and gradients WordPress/gutenberg#32200
- Update the Site Logo logic to use a dedicated site option WordPress/gutenberg#32229
- Limit the Latest Posts block’s featured image width WordPress/gutenberg#32245
- Remove opacity animation in the canvas. WordPress/gutenberg#32266
- Make the focus style valid CSS WordPress/gutenberg#32305
- Fix theme.json styles for the core/list block WordPress/gutenberg#32343
- Fix PHP notice when calling render_block WordPress/gutenberg#32135

Props nosolosw, noisysocks.
See #52991.

Built from https://develop.svn.wordpress.org/trunk@51051


git-svn-id: http://core.svn.wordpress.org/trunk@50660 1a063a9b-81f0-0310-95a4-ce76da25c4cd

Author: youknowriad

wp-includes/assets/script-loader-packages.php

@@ -17,7 +17,10 @@
  * @return string                Filtered block content.
  */
 function wp_render_elements_support( $block_content, $block ) {
-	$link_color = _wp_array_get( $block['attrs'], array( 'style', 'elements', 'link', 'color', 'text' ), null );
+	$link_color = null;
+	if ( ! empty( $block['attrs'] ) ) {
+		$link_color = _wp_array_get( $block['attrs'], array( 'style', 'elements', 'link', 'color', 'text' ), null );
+	}
 
 	/*
 	* For now we only care about link color.

wp-includes/block-supports/elements.php

@@ -140,6 +140,7 @@
 .wp-block-latest-posts__featured-image img {
   height: auto;
   width: auto;
+  max-width: 100%;
 }
 .wp-block-latest-posts__featured-image.alignleft {
   margin-right: 1em;

wp-includes/blocks/latest-posts/style-rtl.css

@@ -142,6 +142,7 @@
 .wp-block-latest-posts__featured-image img {
   height: auto;
   width: auto;
+  max-width: 100%;
 }
 .wp-block-latest-posts__featured-image.alignleft {
   /*rtl:ignore*/

wp-includes/blocks/latest-posts/style-rtl.min.css

@@ -41,7 +41,8 @@
 		"color": {
 			"gradients": true
 		},
-		"__unstablePasteTextInline": true
+		"__unstablePasteTextInline": true,
+		"__experimentalSelector": "ol,ul"
 	},
 	"editorStyle": "wp-block-list-editor",
 	"style": "wp-block-list"

wp-includes/blocks/latest-posts/style.css

@@ -78,4 +78,7 @@
 .wp-block-post-featured-image img {
   max-width: 100%;
   height: auto;
+}
+.wp-block-post-featured-image.alignwide img, .wp-block-post-featured-image.alignfull img {
+  width: 100%;
 }

wp-includes/blocks/latest-posts/style.min.css

@@ -78,4 +78,7 @@
 .wp-block-post-featured-image img {
   max-width: 100%;
   height: auto;
+}
+.wp-block-post-featured-image.alignwide img, .wp-block-post-featured-image.alignfull img {
+  width: 100%;
 }