Generate system notes for same state dismissals

What does this MR do and why?

Generate system notes for same state dismissals.

Validation is already available here and will rescued here.

Related issue: #404570 (closed)

Screenshots or screen recordings

How to set up and validate locally

1. Go to a the vulnerability page of a respective vulnerability (i.e., http:///<PROJECT_FULL_PATH>/-/security/vulnerabilities/<VULNERABILITY_ID>)

2. Trigger the dismissal for different dismissalReason via Graphql as the following:

mutation {
  vulnerabilityDismiss( input: {id: "gid://gitlab/Vulnerability/697", dismissalReason: ACCEPTABLE_RISK}){
    vulnerability {
      state
      stateTransitions {
        nodes {
          dismissalReason
	  			createdAt
	  			fromState
          toState
        }
      }
    }
  }
}

Expectation:

Graphql response should be similar to the following:

{
  "data": {
    "vulnerabilityDismiss": {
      "vulnerability": {
        "state": "DISMISSED",
        "stateTransitions": {
          "nodes": [
            {
              "dismissalReason": "ACCEPTABLE_RISK",
              "createdAt": "2023-04-05T10:21:18Z",
              "fromState": "DISMISSED",
              "toState": "DISMISSED"
            },
            {
              "dismissalReason": "NOT_APPLICABLE",
              "createdAt": "2023-04-05T10:21:00Z",
              "fromState": "DISMISSED",
              "toState": "DISMISSED"
            },
            {
              "dismissalReason": "FALSE_POSITIVE",
              "createdAt": "2023-04-05T10:20:50Z",
              "fromState": "DETECTED",
              "toState": "DISMISSED"
            }
          ]
        }
      }
    }
  }
}

Vulnerability page should include system notes similar to this screenshot

MR acceptance checklist

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