[fix](jdbc catalog) Fixed FE memory leak by enabling weak references …

…in HikariCP (#40773) (#41503)

bp #40773

Co-authored-by: zy-kkk <zhongyk10@gmail.com>

fe/fe-core/src/main/java/org/apache/doris/datasource/jdbc/client/JdbcClient.java

@@ -98,6 +98,7 @@ public static JdbcClient createJdbcClient(JdbcClientConfig jdbcClientConfig) {
     }
 
     protected JdbcClient(JdbcClientConfig jdbcClientConfig) {
+        System.setProperty("com.zaxxer.hikari.useWeakReferences", "true");
         this.catalogName = jdbcClientConfig.getCatalog();
         this.jdbcUser = jdbcClientConfig.getUser();
         this.isOnlySpecifiedDatabase = Boolean.parseBoolean(jdbcClientConfig.getOnlySpecifiedDatabase());