Update to latest pre-release of Draftail. Fixes #9937, #9942 (#10006)

Fixes https://github.com/wagtail/wagtail/issues/9937
fixes https://github.com/wagtail/wagtail/issues/9942

https://github.com/springload/draftail/commit/6734075b8e48d25e66d8f8085faab10cd1d8d6fa
https://github.com/springload/draftail/commit/f4d955a39d9950ee8664fc2300cf4376ac78bef9
https://github.com/springload/draftail/commit/b8c0d11b7a589a3df8d40ed1c6918b6920ef3bc8

package-lock.json

@@ -14,7 +14,7 @@
         "axe-core": "^4.6.2",
         "downshift": "^7.2.0",
         "draft-js": "^0.10.5",
-        "draftail": "^2.0.0-rc.5",
+        "draftail": "^2.0.0-rc.6",
         "draftjs-filters": "^3.0.1",
         "focus-trap-react": "^8.4.2",
         "immer": "^9.0.6",
@@ -18029,9 +18029,9 @@
       }
     },
     "node_modules/draftail": {
-      "version": "2.0.0-rc.5",
-      "resolved": "https://registry.npmjs.org/draftail/-/draftail-2.0.0-rc.5.tgz",
-      "integrity": "sha512-t4o+483o7DY+7taNP6adgh2FAp4VBi0WxcteilPZdRZaotv3ePsLV5TPtfLiQtS4KGgGyP+RiGmPfPjJ/Ycbvg==",
+      "version": "2.0.0-rc.6",
+      "resolved": "https://registry.npmjs.org/draftail/-/draftail-2.0.0-rc.6.tgz",
+      "integrity": "sha512-1Moe87oMhcR0C36H9wjgDo4n9kfv73s8+XKviaxVBopSK6HbZaHiEZu9T68wmYzOnUmAr9G59h0b+sSAGPiBlg==",
       "dependencies": {
         "@tippyjs/react": "^4.2.6",
         "decorate-component-with-props": "^1.0.2",
@@ -44140,9 +44140,9 @@
       }
     },
     "draftail": {
-      "version": "2.0.0-rc.5",
-      "resolved": "https://registry.npmjs.org/draftail/-/draftail-2.0.0-rc.5.tgz",
-      "integrity": "sha512-t4o+483o7DY+7taNP6adgh2FAp4VBi0WxcteilPZdRZaotv3ePsLV5TPtfLiQtS4KGgGyP+RiGmPfPjJ/Ycbvg==",
+      "version": "2.0.0-rc.6",
+      "resolved": "https://registry.npmjs.org/draftail/-/draftail-2.0.0-rc.6.tgz",
+      "integrity": "sha512-1Moe87oMhcR0C36H9wjgDo4n9kfv73s8+XKviaxVBopSK6HbZaHiEZu9T68wmYzOnUmAr9G59h0b+sSAGPiBlg==",
       "requires": {
         "@tippyjs/react": "^4.2.6",
         "decorate-component-with-props": "^1.0.2",

package.json

@@ -107,7 +107,7 @@
     "axe-core": "^4.6.2",
     "downshift": "^7.2.0",
     "draft-js": "^0.10.5",
-    "draftail": "^2.0.0-rc.5",
+    "draftail": "^2.0.0-rc.6",
     "draftjs-filters": "^3.0.1",
     "focus-trap-react": "^8.4.2",
     "immer": "^9.0.6",