Use pdk-fs for Traceur app.

This is to address a build breakage - since Traceur is now using
SettingsLib for styles, it must be included in the pdk-fs group in the
manifest.
Bug: 72955878
Change-Id: I0201d8ccb635f6663eb2a330b6094f140f4fb1d0

default.xml

@@ -546,7 +546,7 @@
   <project path="packages/apps/TimeZoneData" name="platform/packages/apps/TimeZoneData" groups="pdk" />
   <project path="packages/apps/TimeZoneUpdater" name="platform/packages/apps/TimeZoneUpdater" groups="pdk" />
   <project path="packages/apps/Test/connectivity" name="platform/packages/apps/Test/connectivity" groups="pdk" />
-  <project path="packages/apps/Traceur" name="platform/packages/apps/Traceur" groups="pdk" />
+  <project path="packages/apps/Traceur" name="platform/packages/apps/Traceur" groups="pdk-fs" />
   <project path="packages/apps/TvSettings" name="platform/packages/apps/TvSettings" groups="pdk-fs" />
   <project path="packages/apps/TV" name="platform/packages/apps/TV" />
   <project path="packages/apps/UnifiedEmail" name="platform/packages/apps/UnifiedEmail" groups="pdk-fs" />