feat(Backup): use vhd directory setting of remote (#6303)

@xen-orchestra/backups/RemoteAdapter.js

@@ -291,7 +291,7 @@ class RemoteAdapter {
   }
 
   #useVhdDirectory() {
-    return this.handler.type === 's3'
+    return this.handler.useVhdDirectory()
   }
 
   #useAlias() {

@xen-orchestra/fs/src/abstract.js

@@ -424,6 +424,10 @@ export default class RemoteHandlerAbstract {
 
   // Methods that can be implemented by inheriting classes
 
+  useVhdDirectory() {
+    return this._remote.useVhdDirectory ?? false
+  }
+
   async _closeFile(fd) {
     throw new Error('Not implemented')
   }

@xen-orchestra/fs/src/s3.js

@@ -525,4 +525,8 @@ export default class S3Handler extends RemoteHandlerAbstract {
   }
 
   async _closeFile(fd) {}
+
+  useVhdDirectory() {
+    return true
+  }
 }

CHANGELOG.unreleased.md

@@ -40,6 +40,7 @@
 - @vates/event-listeners-manager patch
 - @vates/read-chunk major
 - @xen-orchestra/backups minor
+- @xen-orchestra/fs minor
 - @xen-orchestra/xapi minor
 - vhd-lib minor
 - xo-remote-parser minor