CTA2075: promoting the LoudnessCodecApiTest to presubmit

For having new tests to presubmit they must first pass successfully in
postsubmit first.

Test: adb shell device_config put media_audio android.media.audio.loudness_configurator_api true
Test: atest LoudnessCodecApiTest
Bug: 298463873
Change-Id: I9e9c13c627927cb24147e52800a804782b17ebef
diff --git a/media/TEST_MAPPING b/media/TEST_MAPPING
index 8f5f1f6..f8176a1 100644
--- a/media/TEST_MAPPING
+++ b/media/TEST_MAPPING
@@ -50,7 +50,7 @@
       ]
     }
   ],
-  "postsubmit": [
+  "presubmit": [
     {
       "file_patterns": [
         "[^/]*(LoudnessCodec)[^/]*\\.java"