revert #2379 (#2405)

package-lock.json

@@ -7551,7 +7551,7 @@
         "lodash.throttle": "^4.1.1",
         "memoize-one": "^5.0.4",
         "preact": "8.2.9",
-        "preact8-css-transition-group": "^2.1.1",
+        "preact-css-transition-group": "^1.3.0",
         "resize-observer-polyfill": "^1.5.0"
       },
       "dependencies": {
@@ -31164,6 +31164,11 @@
       "resolved": "https://registry.npmjs.org/preact/-/preact-8.2.9.tgz",
       "integrity": "sha512-ThuGXBmJS3VsT+jIP+eQufD3L8pRw/PY3FoCys6O9Pu6aF12Pn9zAJDX99TfwRAFOCEKm/P0lwiPTbqKMJp0fA=="
     },
+    "preact-css-transition-group": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/preact-css-transition-group/-/preact-css-transition-group-1.3.0.tgz",
+      "integrity": "sha1-Bv5Giyb3gC6VuCmnYtsLwZmu85k="
+    },
     "preact-render-to-string": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-4.1.0.tgz",
@@ -31179,14 +31184,6 @@
         }
       }
     },
-    "preact8-css-transition-group": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/preact8-css-transition-group/-/preact8-css-transition-group-2.1.1.tgz",
-      "integrity": "sha512-pQWxPw9ba4rX1ZtRPJMSE0JExnQJShq6jQP4BfaArdyM6O/31Jr+dhvPUUVJpIIbXRCH801qOVf2KXvHCMgm2g==",
-      "requires": {
-        "preact": "^8.0.0"
-      }
-    },
     "prelude-ls": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.1.2.tgz",

packages/@uppy/dashboard/package.json

@@ -35,7 +35,7 @@
     "lodash.throttle": "^4.1.1",
     "memoize-one": "^5.0.4",
     "preact": "8.2.9",
-    "preact8-css-transition-group": "^2.1.1",
+    "preact-css-transition-group": "^1.3.0",
     "resize-observer-polyfill": "^1.5.0"
   },
   "peerDependencies": {

packages/@uppy/dashboard/src/components/Dashboard.js

@@ -8,7 +8,7 @@ const FileCard = require('./FileCard')
 const classNames = require('classnames')
 const isDragDropSupported = require('@uppy/utils/lib/isDragDropSupported')
 const { h } = require('preact')
-const PreactCSSTransitionGroup = require('preact8-css-transition-group')
+const PreactCSSTransitionGroup = require('preact-css-transition-group')
 
 // http://dev.edenspiekermann.com/2016/02/11/introducing-accessible-modal-dialog
 // https://github.com/ghosh/micromodal