@uppy/core: resolve some (breaking) TODOs

[aduh95]

Opening as draft so we don't forget about those. It should probably not be merged until Dashboard has been typed

[github-actions]

Diff output files

diff --git a/packages/@uppy/core/lib/Uppy.js b/packages/@uppy/core/lib/Uppy.js
index 7b7000b..3b2edee 100644
--- a/packages/@uppy/core/lib/Uppy.js
+++ b/packages/@uppy/core/lib/Uppy.js
@@ -304,7 +304,7 @@ export class Uppy {
   resetProgress() {
     const defaultProgress = {
       percentage: 0,
-      bytesUploaded: 0,
+      bytesUploaded: false,
       uploadComplete: false,
       uploadStarted: null,
     };
@@ -1143,7 +1143,7 @@ function _transformFile2(fileDescriptorOrFile) {
     data: file.data,
     progress: {
       percentage: 0,
-      bytesUploaded: 0,
+      bytesUploaded: false,
       bytesTotal: size,
       uploadComplete: false,
       uploadStarted: null,
@@ -1151,7 +1151,7 @@ function _transformFile2(fileDescriptorOrFile) {
     size,
     isGhost: false,
     isRemote: file.isRemote || false,
-    remote: file.remote || "",
+    remote: file.remote,
     preview: file.preview,
   };
 }