[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

libs/common/src/platform/misc/utils.ts

@@ -1,6 +1,7 @@
 /* eslint-disable no-useless-escape */
 import * as path from "path";
 
+import { Buffer as BufferLib } from "buffer/";
 import { Observable, of, switchMap } from "rxjs";
 import { getHostname, parse } from "tldts";
 import { Merge } from "type-fest";
@@ -145,13 +146,7 @@ export class Utils {
   }
 
   static fromBufferToUtf8(buffer: ArrayBuffer): string {
-    if (Utils.isNode) {
-      return Buffer.from(buffer).toString("utf8");
-    } else {
-      const bytes = new Uint8Array(buffer);
-      const encodedString = String.fromCharCode.apply(null, bytes);
-      return decodeURIComponent(escape(encodedString));
-    }
+    return BufferLib.from(buffer).toString("utf8");
   }
 
   static fromBufferToByteString(buffer: ArrayBuffer): string {