Fix input device settings watchlist

Change-Id: I893c47ec08cbaadece8778825993b2d9a1fe4b14
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4335928
Commit-Queue: David Padlipsky <dpad@google.com>
Reviewed-by: Michael Checo <michaelcheco@google.com>
Cr-Commit-Position: refs/heads/main@{#1116631}

WATCHLISTS

@@ -1242,7 +1242,7 @@
     'input_device_settings': {
       'filepath': 'ash/system/input_device_settings/|'\
                   'chrome/browser/resources/settings/chromeos/device_page/|'\
-                  'chrome/browser/ui/webui/settings/ash/device_section.*|'\
+                  'chrome/browser/ui/webui/settings/ash/device_section.(cc|h)$|'\
                   'chrome/browser/ui/webui/settings/ash/input_device_settings/',
     },
     'input_devices': {