fix(electron): theme Windows titlebar overlay (#16843)

Co-authored-by: Brendan Allan <brendonovich@outlook.com>

packages/desktop-electron/src/preload/index.ts

@@ -57,6 +57,7 @@ const api: ElectronAPI = {
   relaunch: () => ipcRenderer.send("relaunch"),
   getZoomFactor: () => ipcRenderer.invoke("get-zoom-factor"),
   setZoomFactor: (factor) => ipcRenderer.invoke("set-zoom-factor", factor),
+  setTitlebar: (theme) => ipcRenderer.invoke("set-titlebar", theme),
   loadingWindowComplete: () => ipcRenderer.send("loading-window-complete"),
   runUpdater: (alertOnFail) => ipcRenderer.invoke("run-updater", alertOnFail),
   checkUpdate: () => ipcRenderer.invoke("check-update"),