Move large SDK_BYTES test to alexwoo/json_huge_gc_opt branch

The marshallPayloadField_withLargeSdkBytesValue_producesCorrectBase64
test exercises the SdkByteArrayOutputStream overflow path (200 KB
payload), which belongs with the GC optimization changes.

Author: alextwoods

core/protocols/aws-json-protocol/src/test/java/software/amazon/awssdk/protocols/json/internal/marshall/PayloadMarshallingEquivalenceTest.java

@@ -22,7 +22,6 @@
 import java.time.Instant;
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Base64;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
@@ -206,22 +205,6 @@ void marshallPayloadField_withSdkBytesValue_producesBase64EncodedJson() {
         assertThat(body).contains("\"fieldName\":\"ZGF0YQ==\"");
     }
 
-    // ---- SDK_BYTES (large — exceeds SdkByteArrayOutputStream.MAX_BUFFER_SIZE) ----
-
-    @Test
-    void marshallPayloadField_withLargeSdkBytesValue_producesCorrectBase64() {
-        // 200 KB of random data — large enough to trigger SdkByteArrayOutputStream overflow
-        byte[] rawData = new byte[200 * 1024];
-        new java.util.Random(12345).nextBytes(rawData);
-        SdkBytes sdkBytes = SdkBytes.fromByteArray(rawData);
-        String expectedBase64 = Base64.getEncoder().encodeToString(rawData);
-
-        SdkField<SdkBytes> field = payloadField("binaryField", MarshallingType.SDK_BYTES,
-                                                 obj -> sdkBytes);
-        String body = marshallAndGetBody(field);
-        assertThat(body).contains("\"binaryField\":\"" + expectedBase64 + "\"");
-    }
-
     @Test
     void marshallPayloadField_withSdkPojoValue_producesNestedObjectJson() {
         // Inner pojo with a single string field