[8.14] [ci] Use org wide PR status bot (#187386) (#187476)

# Backport

This will backport the following commits from `main` to `8.14`:
- [[ci] Use org wide PR status bot
(#187386)](#187386)

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

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

<!--BACKPORT
[{"author":{"name":"Jon","email":"[email protected]"},"sourceCommit":{"committedDate":"2024-07-03T13:07:19Z","message":"[ci]
Use org wide PR status bot
(#187386)","sha":"bd41c659d9c82d13a3058af536fd8c1577d541ea","branchLabelMapping":{"^v8.15.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["Team:Operations","release_note:skip","backport:all-open","v8.15.0"],"title":"[ci]
Use org wide PR status
bot","number":187386,"url":"https://github.com/elastic/kibana/pull/187386","mergeCommit":{"message":"[ci]
Use org wide PR status bot
(#187386)","sha":"bd41c659d9c82d13a3058af536fd8c1577d541ea"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"main","label":"v8.15.0","branchLabelMappingKey":"^v8.15.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/187386","number":187386,"mergeCommit":{"message":"[ci]
Use org wide PR status bot
(#187386)","sha":"bd41c659d9c82d13a3058af536fd8c1577d541ea"}}]}]
BACKPORT-->

Co-authored-by: Jon <[email protected]>

.buildkite/pipeline-resource-definitions/kibana-on-merge.yml

@@ -20,7 +20,7 @@ spec:
     spec:
       env:
         SLACK_NOTIFICATIONS_CHANNEL: '#kibana-operations-alerts'
-        GITHUB_BUILD_COMMIT_STATUS_ENABLED: 'true'
+        ELASTIC_GITHUB_BUILD_COMMIT_STATUS_ENABLED: 'true'
         GITHUB_COMMIT_STATUS_CONTEXT: buildkite/on-merge
         REPORT_FAILED_TESTS_TO_GITHUB: 'true'
         ELASTIC_SLACK_NOTIFICATIONS_ENABLED: 'true'

.buildkite/pipeline-resource-definitions/kibana-pr.yml

@@ -20,9 +20,9 @@ spec:
     spec:
       env:
         ELASTIC_PR_COMMENTS_ENABLED: 'true'
-        GITHUB_BUILD_COMMIT_STATUS_ENABLED: 'true'
+        ELASTIC_GITHUB_BUILD_COMMIT_STATUS_ENABLED: 'true'
+        ELASTIC_GITHUB_STEP_COMMIT_STATUS_ENABLED: 'true'
         GITHUB_BUILD_COMMIT_STATUS_CONTEXT: kibana-ci
-        GITHUB_STEP_COMMIT_STATUS_ENABLED: 'true'
       allow_rebuilds: true
       branch_configuration: ''
       cancel_intermediate_builds: true

.buildkite/scripts/lifecycle/post_build.sh

@@ -5,7 +5,7 @@ set -euo pipefail
 BUILD_SUCCESSFUL=$(ts-node "$(dirname "${0}")/build_status.ts")
 export BUILD_SUCCESSFUL
 
-if [[ "${GITHUB_BUILD_COMMIT_STATUS_ENABLED:-}" != "true" ]]; then
+if [[ "${ELASTIC_GITHUB_BUILD_COMMIT_STATUS_ENABLED:-}" != "true" ]]; then
   "$(dirname "${0}")/commit_status_complete.sh"
 fi
 

.buildkite/scripts/lifecycle/pre_build.sh

@@ -4,7 +4,7 @@ set -euo pipefail
 
 source .buildkite/scripts/common/util.sh
 
-if [[ "${GITHUB_BUILD_COMMIT_STATUS_ENABLED:-}" != "true" ]]; then
+if [[ "${ELASTIC_GITHUB_BUILD_COMMIT_STATUS_ENABLED:-}" != "true" ]]; then
   "$(dirname "${0}")/commit_status_start.sh"
 fi