chore(fs/abstract#list): remove default value

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

@@ -184,7 +184,7 @@ export default class RemoteHandlerAbstract {
   }
 
   async list(
-    dir: string = '.',
+    dir: string,
     {
       filter,
       prependDir = false,

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

@@ -70,7 +70,7 @@ describe('list()', () => {
       list: () => new Promise(() => {}),
     })
 
-    const promise = testHandler.list()
+    const promise = testHandler.list('.')
     jest.advanceTimersByTime(TIMEOUT)
     await expect(promise).rejects.toThrowError(TimeoutError)
   })

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

@@ -227,7 +227,7 @@ export default class SmbHandler extends RemoteHandlerAbstract {
 
   async _sync() {
     // Check access (smb2 does not expose connect in public so far...)
-    await this.list()
+    await this.list('.')
 
     return this._remote
   }