fix: Upgrade prosemirror-view fixes duplicate lines, closes #3371

Note: That this bump of prosemirror-view also includes typescript types for the first time ever, these conflict with the @types packages and cause the need for extensive changes throughout the codebase. To prevent this becoming a massive PR with days of testing these new types are being removed for now. In the future we will bump all of the pm dependencies and restore the package types here

package.json

@@ -16,6 +16,7 @@
     "lint": "eslint app server shared",
     "deploy": "git push heroku master",
     "prepare": "husky install",
+    "postinstall": "rimraf node_modules/prosemirror-view/dist/index.d.ts",
     "heroku-postbuild": "yarn build:webpack && yarn build:server && yarn copy:i18n && yarn db:migrate",
     "sequelize:migrate": "sequelize db:migrate",
     "db:create-migration": "sequelize migration:create",
@@ -155,7 +156,7 @@
     "prosemirror-tables": "^1.1.1",
     "prosemirror-transform": "1.2.5",
     "prosemirror-utils": "^0.9.6",
-    "prosemirror-view": "1.23.6",
+    "prosemirror-view": "1.26.5",
     "query-string": "^7.0.1",
     "quoted-printable": "^1.0.1",
     "randomstring": "1.1.5",