[8.12] [Fleet] Allow Remote ES to be the default data output (#174056) (

#174059)

# Backport

This will backport the following commits from `main` to `8.12`:
- [[Fleet] Allow Remote ES to be the default data output
(#174056)](#174056)

<!--- Backport version: 9.4.3 -->

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

<!--BACKPORT [{"author":{"name":"Nicolas
Chaulet","email":"nicolas.chaulet@elastic.co"},"sourceCommit":{"committedDate":"2023-12-29T12:36:14Z","message":"[Fleet]
Allow Remote ES to be the default data output
(#174056)","sha":"b31d537b82ca9c4ac55f23ecc57b4328d9dfafb2","branchLabelMapping":{"^v8.13.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["bug","release_note:skip","Team:Fleet","backport:prev-minor","v8.13.0"],"title":"[Fleet]
Allow Remote ES to be the default data
output","number":174056,"url":"https://github.com/elastic/kibana/pull/174056","mergeCommit":{"message":"[Fleet]
Allow Remote ES to be the default data output
(#174056)","sha":"b31d537b82ca9c4ac55f23ecc57b4328d9dfafb2"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"main","label":"v8.13.0","branchLabelMappingKey":"^v8.13.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/174056","number":174056,"mergeCommit":{"message":"[Fleet]
Allow Remote ES to be the default data output
(#174056)","sha":"b31d537b82ca9c4ac55f23ecc57b4328d9dfafb2"}}]}]
BACKPORT-->

Co-authored-by: Nicolas Chaulet <nicolas.chaulet@elastic.co>

x-pack/plugins/fleet/public/applications/fleet/sections/settings/components/edit_output_flyout/use_output_form.tsx

@@ -874,7 +874,7 @@ export function useOutputForm(onSucess: () => void, output?: Output) {
               name: nameInput.value,
               type: outputType.RemoteElasticsearch,
               hosts: elasticsearchUrlInput.value,
-              is_default: false,
+              is_default: defaultOutputInput.value,
               is_default_monitoring: defaultMonitoringOutputInput.value,
               preset: presetInput.value,
               config_yaml: additionalYamlConfigInput.value,