Fix sync_files to use synced work directory for remote connections

The sync_files task was failing on remote connections because it used
ansible.posix.synchronize with delegate_to localhost, trying to rsync
from paths that don't exist on the controller. Follow the same pattern
as static_manifest.yml by checking if the source exists in the synced
_work_dir and using remote_src conditionally with ansible.builtin.copy.

Assisted-By: Claude (claude-4.5-sonnet)
Signed-off-by: Harald Jensås <hjensas@redhat.com>

Author: hjensas

roles/hotloop/tasks/sync_files.yml

@@ -29,9 +29,9 @@
     remote_src: "{{ _synced_src_stat.stat.exists | default(false) }}"
     src: >-
       {{
-        [_work_dir, item.sync_files.src, ''] | ansible.builtin.path_join
+        [_work_dir, item.sync_files.src] | ansible.builtin.path_join
         if _synced_src_stat.stat.exists | default(false)
-        else [item.sync_files.src, ''] | ansible.builtin.path_join
+        else item.sync_files.src
       }}
-    dest: "{{ [item.sync_files.dest, ''] | ansible.builtin.path_join }}"
+    dest: "{{ item.sync_files.dest }}"
     mode: preserve