Deduplicate AMR samples and use dump file prefix for unique names

AMR samples with identical data but different names, previously used to generate uniquely named dump files, have been deleted. Instead, `AssertionConfig` is now used to set the dump file prefix, ensuring files are generated with unique names.

PiperOrigin-RevId: 662883541

libraries/extractor/src/test/java/androidx/media3/extractor/amr/AmrExtractorParameterizedTest.java

@@ -59,7 +59,10 @@ public final class AmrExtractorParameterizedTest {
   public void extractingNarrowBandSamples_withSeeking() throws Exception {
     ExtractorAsserts.assertBehavior(
         createAmrExtractorFactory(/* withSeeking= */ true),
-        "media/amr/sample_nb_cbr.amr",
+        "media/amr/sample_nb.amr",
+        new ExtractorAsserts.AssertionConfig.Builder()
+            .setDumpFilesPrefix("extractordumps/amr/sample_nb_cbr_seeking_enabled.amr")
+            .build(),
         simulationConfig);
   }
 
@@ -67,7 +70,10 @@ public final class AmrExtractorParameterizedTest {
   public void extractingWideBandSamples_withSeeking() throws Exception {
     ExtractorAsserts.assertBehavior(
         createAmrExtractorFactory(/* withSeeking= */ true),
-        "media/amr/sample_wb_cbr.amr",
+        "media/amr/sample_wb.amr",
+        new ExtractorAsserts.AssertionConfig.Builder()
+            .setDumpFilesPrefix("extractordumps/amr/sample_wb_cbr_seeking_enabled.amr")
+            .build(),
         simulationConfig);
   }