Allow using the web editor on any device orientation

On tablets and foldable phones, the editor can remain usable
while in portrait mode thanks to the wide display.

(cherry picked from commit 078475f3545a302bee33440f2f154098f71e77ab)

misc/dist/html/manifest.json

@@ -5,7 +5,6 @@
   "lang": "en",
   "start_url": "./godot.tools.html",
   "display": "standalone",
-  "orientation": "landscape",
   "theme_color": "#202531",
   "icons": [
     {