replace `this.getState().files` with `this.uppy.getState().files` (#4167)

* replace this.getState().files with this.uppy.getState.files

* We actually want to check if the file is NOT present

packages/@uppy/aws-s3/src/MiniXHRUpload.js

@@ -287,7 +287,7 @@ export default class MiniXHRUpload {
       }
       const serverToken = await this.#queueRequestSocketToken(file)
 
-      if (this.getState().files[file.id]) return undefined
+      if (!this.uppy.getState().files[file.id]) return undefined
 
       this.uppy.setFileState(file.id, { serverToken })
       return this.connectToServerSocket(this.uppy.getFile(file.id))

packages/@uppy/tus/src/index.js

@@ -474,7 +474,7 @@ export default class Tus extends BasePlugin {
       }
       const serverToken = await this.#queueRequestSocketToken(file)
 
-      if (this.getState().files[file.id]) return undefined
+      if (!this.uppy.getState().files[file.id]) return undefined
 
       this.uppy.setFileState(file.id, { serverToken })
       return this.connectToServerSocket(this.uppy.getFile(file.id))

packages/@uppy/xhr-upload/src/index.js

@@ -385,7 +385,7 @@ export default class XHRUpload extends BasePlugin {
       }
       const serverToken = await this.#queueRequestSocketToken(file)
 
-      if (this.getState().files[file.id]) return undefined
+      if (!this.uppy.getState().files[file.id]) return undefined
 
       this.uppy.setFileState(file.id, { serverToken })
       return this.connectToServerSocket(this.uppy.getFile(file.id))