[PM-3756] Disable node integration and enable context isolation in desktop (#6975)

* Disable node integration and enable context isolation

* Review comments

* Log in renderer through IPC

* Missed imports

* Mock electron API

* resourcesPath is undefined in the preload, but process.windowsStore works correctly

* Replace fromBufferToUtf8 conditional implementation for the `buffer` package

The current non-node implementation is different than the node implementation,
as the non-node would break when the contents can't be parsed as a URI component.
Replacing the impl by the `buffer` package makes the result match in both environments.

* Fix lint

* Add some more tests

* Remove buffer from devDependencies

apps/desktop/webpack.renderer.js

@@ -54,6 +54,10 @@ const common = {
     extensions: [".tsx", ".ts", ".js"],
     symlinks: false,
     modules: [path.resolve("../../node_modules")],
+    fallback: {
+      path: require.resolve("path-browserify"),
+      fs: false,
+    },
   },
   output: {
     filename: "[name].js",
@@ -64,9 +68,7 @@ const common = {
 const renderer = {
   mode: NODE_ENV,
   devtool: "source-map",
-  // TODO: Replace this with web.
-  // target: "web",
-  target: "electron-renderer",
+  target: "web",
   node: {
     __dirname: false,
   },