[NO-ISSUE][COMP] Making SqlppFunctionBodyRewriter public

- user model changes: no
- storage format changes: no
- interface changes: no

Change-Id: I73b8f0dee44219a0e2ba50923772b4f2232f1271
Reviewed-on: https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/15285
Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Ian Maxon <imaxon@uci.edu>

asterixdb/asterix-lang-sqlpp/src/main/java/org/apache/asterix/lang/sqlpp/rewrites/SqlppFunctionBodyRewriter.java

@@ -61,7 +61,7 @@
 /**
  * This rewriter is used to rewrite body expression of user defined functions and views
  */
-class SqlppFunctionBodyRewriter extends SqlppQueryRewriter {
+public class SqlppFunctionBodyRewriter extends SqlppQueryRewriter {
 
     public SqlppFunctionBodyRewriter(IParserFactory parserFactory) {
         super(parserFactory);