@uppy/xhr-upload: fix when responseType is set to JSON

[Murderlon]

Closes #5628

[github-actions]

Diff output files

diff --git a/packages/@uppy/xhr-upload/lib/index.js b/packages/@uppy/xhr-upload/lib/index.js
index 6245c94..b26e493 100644
--- a/packages/@uppy/xhr-upload/lib/index.js
+++ b/packages/@uppy/xhr-upload/lib/index.js
@@ -133,7 +133,7 @@ export default class XHRUpload extends BasePlugin {
     _classPrivateFieldLooseBase(this, _getFetcher)[_getFetcher] = files => {
       return async (url, options) => {
         try {
-          var _this$opts$getRespons, _this$opts2, _body2;
+          var _this$opts$getRespons, _this$opts2, _body3;
           const res = await fetcher(url, {
             ...options,
             onBeforeRequest: (xhr, retryCount) => {
@@ -174,18 +174,23 @@ export default class XHRUpload extends BasePlugin {
           let body = await ((_this$opts$getRespons = (_this$opts2 = this.opts).getResponseData) == null
             ? void 0
             : _this$opts$getRespons.call(_this$opts2, res));
-          try {
+          if (res.responseType === "json") {
             var _body;
-            (_body = body) != null ? _body : body = JSON.parse(res.responseText);
-          } catch (cause) {
-            throw new Error(
-              "@uppy/xhr-upload expects a JSON response (with a `url` property). To parse non-JSON responses, use `getResponseData` to turn your response into JSON.",
-              {
-                cause,
-              },
-            );
+            (_body = body) != null ? _body : body = res.response;
+          } else {
+            try {
+              var _body2;
+              (_body2 = body) != null ? _body2 : body = JSON.parse(res.responseText);
+            } catch (cause) {
+              throw new Error(
+                "@uppy/xhr-upload expects a JSON response (with a `url` property). To parse non-JSON responses, use `getResponseData` to turn your response into JSON.",
+                {
+                  cause,
+                },
+              );
+            }
           }
-          const uploadURL = typeof ((_body2 = body) == null ? void 0 : _body2.url) === "string" ? body.url : undefined;
+          const uploadURL = typeof ((_body3 = body) == null ? void 0 : _body3.url) === "string" ? body.url : undefined;
           for (
             const {
               id,