Implicit commit when i execute stored procedure from sqldeveloper

Hi, I'am executing a stored procedure whitout commit or rollback, i have executed this from sqldeveloper and when i review i look the register there is in the table

1. create or replace NONEDITIONABLE PROCEDURE pruebac AS
   BEGIN
   insert into system.prueba values (11);
   END pruebac;

2. SQL> exec pruebac;

PL/SQL procedure successfully completed.

SQL> disc
Disconnected from Oracle Database 19c Standard Edition 2 Release 19.0.0.0.0 - Production
Version 19.20.0.0.0

3. open new connection

4. I look new record

SQL> select * from system.prueba;

     A

     1

     2

     3

     4

     5

     6

     7

    10

    10

    11

10 rows selected.

Why, this row is saving in the table? without commit or rollback.