Fix some ansible-lint-reported warnings

This mostly fixes `key-order` warnings around
`block` statements.

roles/matrix-synapse/tasks/synapse/setup_install.yml

@@ -18,7 +18,8 @@
     group: "{{ matrix_user_groupname }}"
   when: "not local_path_media_store_stat.failed and not local_path_media_store_stat.stat.exists"
 
-- block:
+- when: "matrix_synapse_container_image_self_build | bool"
+  block:
     - name: Ensure Synapse repository is present on self-build
       ansible.builtin.git:
         repo: "{{ matrix_synapse_container_image_self_build_repo }}"
@@ -48,7 +49,6 @@
       environment:
         DOCKER_BUILDKIT: 1
       when: "matrix_synapse_git_pull_results.changed | bool or matrix_synapse_docker_image_check_result.stdout == ''"
-  when: "matrix_synapse_container_image_self_build | bool"
 
 - name: Ensure Synapse Docker image is pulled
   docker_image:

roles/matrix-synapse/tasks/synapse/workers/util/inject_worker.yml

@@ -37,7 +37,8 @@
     msg: "Unrecognized Synapse worker `app`: `{{ matrix_synapse_worker_details.app }}`. Supported types are: {{ matrix_synapse_workers_avail_list | join(', ') }}"
   when: "matrix_synapse_worker_details.app not in matrix_synapse_workers_avail_list"
 
-- block:
+- when: "matrix_synapse_worker_details.type == 'stream_writer'"
+  block:
     - name: Fail if stream_writer_stream not defined for stream_writer worker
       ansible.builtin.fail:
         msg: >-
@@ -50,7 +51,6 @@
       ansible.builtin.fail:
         msg: "Synapse background workers of type stream_writer (such as {{ item }}) need to define a valid `replication_port` property"
       when: "'replication_port' not in matrix_synapse_worker_details"
-  when: "matrix_synapse_worker_details.type == 'stream_writer'"
 
 - ansible.builtin.set_fact:
     matrix_systemd_services_list: "{{ matrix_systemd_services_list + [matrix_synapse_worker_details.name + '.service'] }}"