fix: rtl scroll converter test asserting incorrect values (#6859)

* Revert "fix: RtlScrollConverter test on high dpi systems in fast-web-utilities (#6857)"

This reverts commit a7a3c89.

* force 1x display scale factor in karma

* fix RtlScrollConverter test

- Chromium reports 0.5
- Webkit and Firefox both report 0

* Change files

change/@microsoft-fast-web-utilities-14b2f190-1571-4498-ba72-68bbafb26a20.json → change/@microsoft-fast-web-utilities-3092275f-0c7e-4bf4-be96-424047357621.json

@@ -1,6 +1,6 @@
 {
   "type": "none",
-  "comment": "fix RtlScrollConverter test for high dpi systems",
+  "comment": "fix RtlScrollConverter test",
   "packageName": "@microsoft/fast-web-utilities",
   "email": "[email protected]",
   "dependentChangeType": "none"

packages/utilities/fast-web-utilities/karma.conf.ts

@@ -16,6 +16,7 @@ const commonChromeFlags = [
     "--disable-extensions",
     "--disable-infobars",
     "--disable-translate",
+    "--force-device-scale-factor=1",
 ];
 
 module.exports = function (config: any) {

packages/utilities/fast-web-utilities/src/rtl-scroll-converter.spec.ts

@@ -102,15 +102,14 @@ describe("RtlScrollConverter", (): void => {
         );
     });
 
-    it("invertedGetRtlScrollConverter returns correct value", () => {
-        const scale = window.devicePixelRatio;
+    it("invertedGetRtlScrollConverter returns a value <= 0", () => {
         const testElement: HTMLDivElement = getDummyDiv();
         document.body.appendChild(testElement);
         testElement.scrollLeft = 1;
 
-        expect(RtlScrollConverter["invertedGetRtlScrollConverter"](testElement)).to.equal(
-            -1 / scale
-        );
+        expect(
+            RtlScrollConverter["invertedGetRtlScrollConverter"](testElement)
+        ).to.be.lessThanOrEqual(0);
     });
 
     it("reverseGetRtlScrollConverter returns correct value", () => {