Block Editor: Bug fixes targeted for WordPress 5.3.1.

The list of included fixes:

- Edge scrolling issues WordPress/gutenberg#17707
- Intermittent JavaScript issues WordPress/gutenberg#18559
- Remove embed CollegeHumor WordPress/gutenberg#18591 

Updated packages:

- @wordpress/block-directory@1.0.6
- @wordpress/block-editor@3.2.5
- @wordpress/block-library@2.9.6
- @wordpress/core-data@2.7.5
- @wordpress/edit-post@3.8.6
- @wordpress/editor@9.7.6
- @wordpress/format-library@1.9.5

Props youknowriad, ellatrix, epiqueras, audrasjb, gziolo, mcsf, kyliesabra.
Merges [46860] to the 5.3 branch.
Fixes #48884.
Built from https://develop.svn.wordpress.org/branches/5.3@46861

wp-includes/js/dist/block-editor.js

@@ -4928,7 +4928,7 @@ var external_this_wp_hooks_ = __webpack_require__(27);
 var external_this_wp_data_ = __webpack_require__(4);
 
 // EXTERNAL MODULE: ./node_modules/tinycolor2/tinycolor.js
-var tinycolor = __webpack_require__(48);
+var tinycolor = __webpack_require__(49);
 var tinycolor_default = /*#__PURE__*/__webpack_require__.n(tinycolor);
 
 // CONCATENATED MODULE: ./node_modules/@wordpress/block-editor/build-module/components/colors/utils.js
@@ -19749,7 +19749,7 @@ function (_Component) {
         return;
       }
 
-      var diff = currentCaretRect.y - this.caretRect.y;
+      var diff = currentCaretRect.top - this.caretRect.top;
 
       if (diff === 0) {
         return;
@@ -19763,8 +19763,8 @@ function (_Component) {
 
       var windowScroll = scrollContainer === document.body;
       var scrollY = windowScroll ? window.scrollY : scrollContainer.scrollTop;
-      var scrollContainerY = windowScroll ? 0 : scrollContainer.getBoundingClientRect().y;
-      var relativeScrollPosition = windowScroll ? this.caretRect.y / window.innerHeight : (this.caretRect.y - scrollContainerY) / (window.innerHeight - scrollContainerY); // If the scroll position is at the start, the active editable element
+      var scrollContainerY = windowScroll ? 0 : scrollContainer.getBoundingClientRect().top;
+      var relativeScrollPosition = windowScroll ? this.caretRect.top / window.innerHeight : (this.caretRect.top - scrollContainerY) / (window.innerHeight - scrollContainerY); // If the scroll position is at the start, the active editable element
       // is the last one, and the caret is positioned within the initial
       // trigger percentage of the page, do not scroll the page.
       // The typewriter effect should not kick in until an empty page has been
@@ -19781,8 +19781,8 @@ function (_Component) {
       // view.
 
       if ( // The caret is under the lower fold.
-      this.caretRect.y + this.caretRect.height > scrollContainerY + scrollContainerHeight || // The caret is above the upper fold.
-      this.caretRect.y < scrollContainerY) {
+      this.caretRect.top + this.caretRect.height > scrollContainerY + scrollContainerHeight || // The caret is above the upper fold.
+      this.caretRect.top < scrollContainerY) {
         // Reset the caret position to maintain.
         this.caretRect = currentCaretRect;
         return;
@@ -23627,7 +23627,7 @@ try {
 
 /***/ }),
 
-/***/ 48:
+/***/ 49:
 /***/ (function(module, exports, __webpack_require__) {
 
 var __WEBPACK_AMD_DEFINE_RESULT__;// TinyColor v1.4.1

wp-includes/js/dist/block-library.js

@@ -3027,13 +3027,17 @@ var others = [{
   },
   patterns: [/^https?:\/\/cloudup\.com\/.+/i]
 }, {
+  // Deprecated since CollegeHumor content is now powered by YouTube
   name: 'core-embed/collegehumor',
   settings: {
     title: 'CollegeHumor',
     icon: embedVideoIcon,
-    description: Object(external_this_wp_i18n_["__"])('Embed CollegeHumor content.')
+    description: Object(external_this_wp_i18n_["__"])('Embed CollegeHumor content.'),
+    supports: {
+      inserter: false
+    }
   },
-  patterns: [/^https?:\/\/(www\.)?collegehumor\.com\/.+/i]
+  patterns: []
 }, {
   name: 'core-embed/crowdsignal',
   settings: {
@@ -10353,7 +10357,7 @@ var dist = __webpack_require__(221);
 var dist_default = /*#__PURE__*/__webpack_require__.n(dist);
 
 // EXTERNAL MODULE: ./node_modules/tinycolor2/tinycolor.js
-var tinycolor = __webpack_require__(48);
+var tinycolor = __webpack_require__(49);
 var tinycolor_default = /*#__PURE__*/__webpack_require__.n(tinycolor);
 
 // CONCATENATED MODULE: ./node_modules/@wordpress/block-library/build-module/cover/icon.js
@@ -20601,7 +20605,7 @@ module.exports = function memize( fn, options ) {
 
 /***/ }),
 
-/***/ 48:
+/***/ 49:
 /***/ (function(module, exports, __webpack_require__) {
 
 var __WEBPACK_AMD_DEFINE_RESULT__;// TinyColor v1.4.1

wp-includes/js/dist/blocks.js

@@ -6090,7 +6090,7 @@ var v4_default = /*#__PURE__*/__webpack_require__.n(v4);
 var external_this_wp_hooks_ = __webpack_require__(27);
 
 // EXTERNAL MODULE: ./node_modules/tinycolor2/tinycolor.js
-var tinycolor = __webpack_require__(48);
+var tinycolor = __webpack_require__(49);
 var tinycolor_default = /*#__PURE__*/__webpack_require__.n(tinycolor);
 
 // EXTERNAL MODULE: external {"this":["wp","element"]}
@@ -11974,7 +11974,7 @@ function _nonIterableRest() {
 
 /***/ }),
 
-/***/ 48:
+/***/ 49:
 /***/ (function(module, exports, __webpack_require__) {
 
 var __WEBPACK_AMD_DEFINE_RESULT__;// TinyColor v1.4.1