revert: composite refs back to @main

Cross-repo testing against lst-api refactor branch is complete:
- Snapshot mode passes end-to-end.
- Cold-start mode brings up kurtosis cleanly; the e2e-suite failure
  there is the documented pre-block-256 eth_getLogs limitation, not
  a workflow infrastructure issue.

Workflow is merge-ready. Restore the canonical @main refs on the
two composite uses inside apps-e2e.yml so this PR's merge candidate
self-references main.

Author: MaximusHaximus

.github/workflows/apps-e2e.yml

@@ -105,19 +105,14 @@ jobs:
       - name: Restore from snapshot
         if: env.E2E_USE_SNAPSHOT == '1'
         id: snapshot
-        # TEMP: pinned to feature branch for cross-repo pre-merge testing.
-        # Reverts to @main before review/merge — see commit
-        # "test: pin composite refs to feature branch" for the diff to undo.
-        uses: 0xPolygon/pipelines/.github/actions/e2e-snapshot-restore@feat/apps-e2e-shared-workflow
+        uses: 0xPolygon/pipelines/.github/actions/e2e-snapshot-restore@main
         with:
           image: ${{ inputs.snapshot_image }}
           kurtosis_pos_ref: ${{ inputs.kurtosis_pos_ref }}
 
       - name: Cold-start kurtosis
         if: env.E2E_USE_SNAPSHOT == '0'
-        # TEMP: pinned to feature branch for cross-repo pre-merge testing.
-        # Reverts to @main before review/merge.
-        uses: 0xPolygon/pipelines/.github/actions/e2e-cold-start@feat/apps-e2e-shared-workflow
+        uses: 0xPolygon/pipelines/.github/actions/e2e-cold-start@main
         with:
           kurtosis_pos_ref: ${{ inputs.kurtosis_pos_ref }}
           args_file: ${{ inputs.cold_start_args_file }}