[next gen on clould] workload report " FATAL: mysql_drv_query() returned error 8252 (Exceeded resource group quota limitation) for query 'INSERT" when simulate pd leader network partition

## Bug Report

### What did you do?
1、run simulated workload
nohup sysbench --db-driver=mysql --mysql-user=root --mysql-host=xxx --mysql-port=4000 --mysql-password=xxx --mysql-db=bingo_dc --order_tables=38 --update_ratio=0.1 --cop_read=0.001 --batch_insert=0.0002 --threads=500 --report-interval=10 --time=0 c66_dc run | while IFS= read -r line; do printf '[%s] %s\n' "$(date '+%Y-%m-%d %H:%M:%S')" "$line"; done > sysbench_00907_1.log 2>&1 &

nohup sysbench --db-driver=mysql --mysql-user=root --mysql-host=xxx --mysql-port=4000 --mysql-password=xxx --mysql-db=bingo_dc --order_tables=38 --threads=1 --time=0 tiflash_read run | while IFS= read -r line; do printf '[%s] %s\n' "$(date '+%Y-%m-%d %H:%M:%S')" "$line"; done > sysbench_tiflash_00907_1.log 2>&1 &

2、simulate pd leader network partition
chaos：2025/09/09 16:09:25.345 +08:00 ~ 2025/09/09 16:19:25.345 +08:00

### What did you expect to see?
no unexpected error

### What did you see instead?
workload report error
FATAL: mysql_drv_query() returned error 8252 (Exceeded resource group quota limitation) for query 'INSERT

### What version of PD are you using (`pd-server -V`)?
sh-5.1# ./pd-server -V
Release Version: v9.0.0-beta.2.pre-103-g2d131a5
Edition: Enterprise
Kernel Type: Next Generation
Git Commit Hash: https://github.com/tikv/pd/commit/2d131a509fd8dc9e29b043c792d9248e9d3590e9
Git Branch: HEAD
UTC Build Time: 2025-09-04 11:12:01