r3f fixes (#222)

* Minify r3f extension bundle, because it is expected by the React dead code elimination check, since we bundle React in it

* Add children to props, since it is required by React 18 types

* Fix getting context attributes for gl in ReferenceWindow

* Don't bundle threejs in extension

* Fix editor not responding to scene initialization

* Fix SnapshotEditor css

packages/r3f/devEnv/bundle.ts

@@ -58,7 +58,7 @@ async function createBundles() {
         '@theatre/studio',
         '@theatre/dataverse',
         '@theatre/r3f',
-        // 'three',
+        'three',
         // '@react-three/fiber',
         // '@react-three/drei',
         // 'three-stdlib',
@@ -69,6 +69,7 @@ async function createBundles() {
       outfile: path.join(__dirname, '../dist/extension/index.js'),
       format: 'cjs',
       metafile: true,
+      minify: true,
     }
 
     const result = await build(esbuildConfig)