feat: Remove initialize_components function (#2284)

## What ❔

Makes node framework the only way to run main node.
Removes `initialize_components` function.

⚠️ Some leftovers are left in `core_leftovers` -- these are still used
in some places. Removing them will be tacked separately.

## Why ❔

Part of the migration.

## Checklist

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<!-- For draft PRs check the boxes as you complete them. -->

- [ ] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [ ] Tests for the changes have been added / updated.
- [ ] Documentation comments have been added / updated.
- [ ] Code has been formatted via `zk fmt` and `zk lint`.
- [ ] Spellcheck has been run via `zk spellcheck`.

.github/workflows/ci-core-reusable.yml

@@ -205,7 +205,7 @@ jobs:
       # `sleep 5` because we need to wait until server started properly
       - name: Run server
         run: |
-          ci_run zk server --use-node-framework --components=$SERVER_COMPONENTS &>server.log &
+          ci_run zk server --components=$SERVER_COMPONENTS &>server.log &
           ci_run sleep 5
 
       - name: Run contract verifier

.github/workflows/ci-zk-toolbox-reusable.yml

@@ -90,7 +90,7 @@ jobs:
 
       - name: Run server
         run: |
-          ci_run zk_inception server --ignore-prerequisites -a --use-node-framework --verbose &>server.log &
+          ci_run zk_inception server --ignore-prerequisites -a --verbose &>server.log &
           ci_run sleep 5
 
       - name: Run integration tests