docs: fix win.setIcon ts type (#20980)

* docs: fix win.setIcon ts type

* test: update smoke tests

docs/api/browser-window.md

@@ -1553,7 +1553,7 @@ Same as `webContents.showDefinitionForSelection()`.
 
 #### `win.setIcon(icon)` _Windows_ _Linux_
 
-* `icon` [NativeImage](native-image.md)
+* `icon` [NativeImage](native-image.md) | String
 
 Changes window icon.
 

spec/ts-smoke/electron/main.ts

@@ -318,17 +318,6 @@ app.setAboutPanelOptions({
   version: '1.2.3'
 })
 
-let window = new BrowserWindow()
-window.setProgressBar(0.5)
-window.setRepresentedFilename('/etc/passwd')
-window.setDocumentEdited(true)
-window.previewFile('/path/to/file')
-window.previewFile('/path/to/file', 'Displayed Name')
-window.setVibrancy('menu')
-window.setVibrancy('titlebar')
-window.setVibrancy('selection')
-window.setVibrancy('popover')
-
 // Online/Offline Event Detection
 // https://github.com/atom/electron/blob/master/docs/tutorial/online-offline-events.md
 
@@ -448,7 +437,7 @@ autoUpdater.on('update-downloaded', (event, releaseNotes, releaseName, releaseDa
   console.log('update-downloaded', releaseNotes, releaseName, releaseDate, updateURL)
 })
 
-// browser-window
+// BrowserWindow
 // https://github.com/atom/electron/blob/master/docs/api/browser-window.md
 
 let win3 = new BrowserWindow({ width: 800, height: 600, show: false })
@@ -462,6 +451,18 @@ win3.show()
 const toolbarRect = document.getElementById('toolbar').getBoundingClientRect()
 win3.setSheetOffset(toolbarRect.height)
 
+let window = new BrowserWindow()
+window.setProgressBar(0.5)
+window.setRepresentedFilename('/etc/passwd')
+window.setDocumentEdited(true)
+window.previewFile('/path/to/file')
+window.previewFile('/path/to/file', 'Displayed Name')
+window.setVibrancy('menu')
+window.setVibrancy('titlebar')
+window.setVibrancy('selection')
+window.setVibrancy('popover')
+window.setIcon('/path/to/icon')
+
 const installed = BrowserWindow.getDevToolsExtensions().hasOwnProperty('devtron')
 
 // content-tracing