[8.19] [Security solution] Update fleet_packages.json to include Security AI Prompts in kbn bundle (#225107) (#225540)

# Backport

This will backport the following commits from `main` to `8.19`:
- [[Security solution] Update `fleet_packages.json` to include Security
AI Prompts in kbn bundle
(#225107)](#225107)

<!--- Backport version: 10.0.1 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Steph
Milovic","email":"[email protected]"},"sourceCommit":{"committedDate":"2025-06-26T18:34:04Z","message":"[Security
solution] Update `fleet_packages.json` to include Security AI Prompts in
kbn bundle
(#225107)","sha":"5220391abb7e5437ab43aa16e44e36710af59c68","branchLabelMapping":{"^v9.1.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","Team:Security
Generative AI","backport:version","v9.1.0","v8.19.0"],"title":"[Security
solution] Update `fleet_packages.json` to include Security AI Prompts in
kbn
bundle","number":225107,"url":"https://github.com/elastic/kibana/pull/225107","mergeCommit":{"message":"[Security
solution] Update `fleet_packages.json` to include Security AI Prompts in
kbn bundle
(#225107)","sha":"5220391abb7e5437ab43aa16e44e36710af59c68"}},"sourceBranch":"main","suggestedTargetBranches":["8.19"],"targetPullRequestStates":[{"branch":"main","label":"v9.1.0","branchLabelMappingKey":"^v9.1.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/225107","number":225107,"mergeCommit":{"message":"[Security
solution] Update `fleet_packages.json` to include Security AI Prompts in
kbn bundle
(#225107)","sha":"5220391abb7e5437ab43aa16e44e36710af59c68"}},{"branch":"8.19","label":"v8.19.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"}]}]
BACKPORT-->

Author: stephmilovic

fleet_packages.json

@@ -57,5 +57,10 @@
   {
     "name": "security_detection_engine",
     "version": "8.18.7"
+  },
+  {
+    "name": "security_ai_prompts",
+    "version": "0.0.3",
+    "allowSyncToPrerelease": true
   }
-]
+]