Change wording of audio processing message body.

Re-wording the audio processing message body to make it more clear that
the app has not actually "placed" as call, but that it is instead simply
processing a call in the background.

Test: Manual test using audio screening to verify message.
Test: Build
Fixes: 240479337
Change-Id: Ib072678697f71bd0682b87dfb58f0c6a622d838a
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 6b8c0b2..bf5abca 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -73,8 +73,8 @@
          that a call be put into the background so that the app can access the audio from the call.
          [CHAR LIMIT=NONE] -->
     <string name="notification_audioProcessing_body">
-        <xliff:g id="audio_processing_app_name">%s</xliff:g> has placed a call into the
-        background. This app may be accessing and playing audio over the call.
+        <xliff:g id="audio_processing_app_name">%s</xliff:g> is processing a call in the background.
+        This app may be accessing and playing audio over the call.
     </string>
 
     <!-- Crashed in call service notification label, used when the in call service has crashed and