ci: upload detox build to emerge on merge queue runs (#5360)

### Description

Some main runs fail to upload this because E2E-main runs are skipped if
multiple PRs merge at the same time (or if some fail due to test flake).
This ensures a commit on main always uploads a build to emerge.

More context here:
https://valora-app.slack.com/archives/C02E2FE98P2/p1713968251987719

### Test plan

Watch CI run on merge queue

### Related issues

N/A

### Backwards compatibility

N/A

### Network scalability

N/A

.github/scripts/uploadE2eBuildToEmerge.ts

@@ -30,6 +30,11 @@ function getGitHubInfo() {
     // Get the SHA of the previous commit, which will be the baseSha in the case of a push event.
     baseSha = eventFileJson?.before ?? ''
     branchName = process.env.GITHUB_REF_NAME ?? ''
+  } else if (process.env.GITHUB_EVENT_NAME === 'merge_group') {
+    sha = process.env.GITHUB_SHA ?? ''
+    // Get the SHA of the base commit, which will be the base_sha in the case of a merge_group event.
+    baseSha = eventFileJson?.merge_group?.base_sha ?? ''
+    branchName = process.env.GITHUB_REF_NAME ?? ''
   } else {
     throw new Error(`Unsupported action trigger: ${process.env.GITHUB_EVENT_NAME}`)
   }

.github/workflows/e2e-ios.yml

@@ -56,7 +56,7 @@ jobs:
       - name: Upload Detox Build to Emerge
         if: |
           env.SECRETS_AVAILABLE
-            && (github.event_name == 'pull_request' || github.event_name == 'push')
+            && (github.event_name == 'pull_request' || github.event_name == 'push' || github.event_name == 'merge_group')
         run: yarn ts-node .github/scripts/uploadE2eBuildToEmerge.ts
         env:
           EMERGE_API_TOKEN: ${{ steps.google-secrets.outputs.EMERGE_API_TOKEN }}