UI: always clear CameraView background (#23231)

* fix background

* gate that with Hardware::EON

* always call glclear
old-commit-hash: 5810583d57

selfdrive/ui/qt/widgets/cameraview.cc

@@ -199,11 +199,10 @@ void CameraViewWidget::updateFrameMat(int w, int h) {
 }
 
 void CameraViewWidget::paintGL() {
-  if (latest_texture_id == -1) {
+  glClearColor(bg.redF(), bg.greenF(), bg.blueF(), bg.alphaF());
-    glClearColor(bg.redF(), bg.greenF(), bg.blueF(), bg.alphaF());
+  glClear(GL_STENCIL_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
-    glClear(GL_STENCIL_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
+
-    return;
+  if (latest_texture_id == -1) return;
-  }
 
   glViewport(0, 0, width(), height());