fix(ci): pass ref to build.yml so RC build uses same branch as OTA check

Author: weitingsun

.github/workflows/build.yml

@@ -14,7 +14,7 @@ on:
         type: boolean
         default: false
       ref:
-        description: 'Git ref to checkout when skip_version_bump is true. Defaults to the triggering event ref.'
+        description: 'Git ref (branch) to run the build against. Used as base-branch for version bump and for checkout when skip_version_bump is true. Defaults to the triggering event ref.'
         required: false
         type: string
         default: ''
@@ -60,7 +60,7 @@ jobs:
       contents: write
       id-token: write
     with:
-      base-branch: ${{ github.ref_name }}
+      base-branch: ${{ inputs.ref || github.ref_name }}
     secrets:
       PR_TOKEN: ${{ secrets.PR_TOKEN }}
 

.github/workflows/runway_ios_rc_workflow.yml

@@ -144,4 +144,5 @@ jobs:
       build_name: main-rc
       platform: ios
       skip_version_bump: false
+      ref: ${{ inputs.ref || github.ref_name }}
     secrets: inherit