[BUG] <DLPS> - DELETE pipeline does not work

[xwu2intel]

Bug Description

Stopped pipelines remain in the pipelines/status:

$ curl -X DELETE -fs localhost:8080/pipelines/fcefbcd0417a11f09a7c0242ac180004
{
  "avg_fps": 0.0,
  "elapsed_time": 0.03824281692504883,
  "id": "fcefbcd0417a11f09a7c0242ac180004",
  "message": "basic_filebuf::underflow error reading the file: Is a directory",
  "start_time": 1749065693.3977137,
  "state": "ERROR"
}

$ docker logs -f f5ac74555493
2025-06-04 19:55:29,664 - INFO - manager         - stop [338] - Pipeline instance stopped: fcefbcd0417a11f09a7c0242ac180004
2025-06-04 19:55:31,076 - INFO - manager         - stop [338] - Pipeline instance stopped: fcefbcd0417a11f09a7c0242ac180004

$ curl -fs localhost:8080/pipelines/status
[
  {
    "avg_fps": 0.0,
    "elapsed_time": 0.03824281692504883,
    "id": "fcefbcd0417a11f09a7c0242ac180004",
    "message": "basic_filebuf::underflow error reading the file: Is a directory",
    "start_time": 1749065693.3977137,
    "state": "ERROR"
  }
]

System Setup

Any

Reproducible Steps

NA

Root Cause Analysis

No response