Forward lineage must ignore failed jobs

[wajda]

The impact graph is constructed such that if all execution events were successful. This is not correct.
The design assumption is that failed events do not modify any data and therefore should be ignored in the impact view.

Test scenario

export BASE=http://localhost:8080
export CT="application/vnd.absa.spline.producer.v1.2+json"
export CONSUMER="$BASE/consumer"
export PRODUCER="$BASE/producer"
curl -s -X POST "$PRODUCER/execution-plans" -H "Content-Type: $CT" -d '{
  "id": "11111111-1111-1111-1111-111111111134",
  "name": "Lineage vs error UI",
  "operations": {
    "write": { "id": "w1", "outputSource": "jdbc:demo:warehouse/table_z", "append": false,
      "childIds": ["r1"], "extra": { "destinationType": "jdbc" } },
    "reads": [{ "id": "r1", "inputSources": ["jdbc:demo:warehouse/table_a"] }],
    "other": []
  },
  "systemInfo": { "name": "manual-stub", "version": "1.0" }
}'
curl -s -X POST "$PRODUCER/execution-events" -H "Content-Type: $CT" -d '[
  { "planId": "11111111-1111-1111-1111-111111111134", "timestamp": 1735812000000 },
  { "planId": "11111111-1111-1111-1111-111111111134", "timestamp": 1735815600000,
    "error": { "message": "Second run failed", "code": "EX34" } }
]'
curl -s -X POST "$PRODUCER/execution-plans" -H "Content-Type: $CT" -d '{
  "id": "11111111-1111-1111-1111-111111111135",
  "name": "Consumer of Z",
  "operations": {
    "write": { "id": "w1", "outputSource": "jdbc:demo:warehouse/table_p", "append": false,
      "childIds": ["r1"], "extra": { "destinationType": "jdbc" } },
    "reads": [{ "id": "r1", "inputSources": ["jdbc:demo:warehouse/table_z"] }],
    "other": []
  },
  "systemInfo": { "name": "manual-stub", "version": "1.0" }
}'
curl -s -X POST "$PRODUCER/execution-events" -H "Content-Type: $CT" -d '[{
  "planId": "11111111-1111-1111-1111-111111111135", "timestamp": 1795820000000
}]'