chore: have 'use strict' consistently across our lib files (#14721)

lib/sandboxed_renderer/api/exports/child_process.js

@@ -1 +1,3 @@
+'use strict'
+
 module.exports = require('electron').remote.require('child_process')

lib/sandboxed_renderer/api/exports/electron.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const moduleList = require('@electron/internal/sandboxed_renderer/api/module-list')
 
 for (const {

lib/sandboxed_renderer/api/exports/fs.js

@@ -1 +1,3 @@
+'use strict'
+
 module.exports = require('electron').remote.require('fs')

lib/sandboxed_renderer/api/exports/os.js

@@ -1 +1,3 @@
+'use strict'
+
 module.exports = require('electron').remote.require('os')

lib/sandboxed_renderer/api/exports/path.js

@@ -1 +1,3 @@
+'use strict'
+
 module.exports = require('electron').remote.require('path')

lib/sandboxed_renderer/api/ipc-renderer.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const ipcRenderer = require('@electron/internal/renderer/api/ipc-renderer')
 
 const v8Util = process.atomBinding('v8_util')

lib/sandboxed_renderer/api/module-list.js

@@ -1,3 +1,5 @@
+'use strict'
+
 const features = process.atomBinding('features')
 
 module.exports = [