CCA: Close setting view when sending feedback.

Bug: b:155938542
Test: Manually

Change-Id: I20a71f1292d85ba2595e20a0ec33e0668df0a203
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2190466
Auto-Submit: Kuo Jen Wei <inker@chromium.org>
Commit-Queue: Shik Chen <shik@chromium.org>
Reviewed-by: Shik Chen <shik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#768888}

chrome/browser/resources/chromeos/camera/src/js/views/settings.js

@@ -111,6 +111,10 @@ export class MasterSettings extends BaseSettings {
    * @private
    */
   openFeedback() {
+    // Prevent setting view overlapping preview when sending app window feedback
+    // screenshot b/155938542.
+    this.leave();
+
     const data = {
       'categoryTag': 'chromeos-camera-app',
       'requestFeedback': true,