SNOW-1894342 Fix flaky test (#2272)

Author: sfc-gh-rkowalski

src/test/java/net/snowflake/client/jdbc/DatabaseMetaDataLatestIT.java

@@ -2690,7 +2690,7 @@ void setUp() throws Exception {
       procedureWithUnderscore = "MY_PROCEDURE_" + suffix;
       functionWithUnderscore = "MY_FUNCTION_" + suffix;
 
-      alternativeSchema = schemaWithUnderscore.replace("_", "X");
+      alternativeSchema = GENERATED_SCHEMA_PREFIX + "MYXSCHEMAX" + suffix;
       alternativeTable = tableWithUnderscore.replace("_", "X");
       alternativeColumn = columnWithUnderscore.replace("_", "X");
       alternativeProcedure = procedureWithUnderscore.replace("_", "X");