Improve randomString mock for better snapshots (#11375)

test/components/views/beacon/BeaconListItem-test.tsx

@@ -28,11 +28,6 @@ import {
     makeRoomWithBeacons,
 } from "../../../test-utils";
 
-// Fake random strings to give a predictable snapshot for IDs
-jest.mock("matrix-js-sdk/src/randomstring", () => ({
-    randomString: () => "abdefghi",
-}));
-
 describe("<BeaconListItem />", () => {
     // 14.03.2022 16:15
     const now = 1647270879403;

test/components/views/beacon/DialogSidebar-test.tsx

@@ -27,11 +27,6 @@ import {
     mockClientMethodsUser,
 } from "../../../test-utils";
 
-// Fake random strings to give a predictable snapshot for IDs
-jest.mock("matrix-js-sdk/src/randomstring", () => ({
-    randomString: () => "abdefghi",
-}));
-
 describe("<DialogSidebar />", () => {
     const defaultProps: ComponentProps<typeof DialogSidebar> = {
         beacons: [],

test/components/views/beacon/ShareLatestLocation-test.tsx

@@ -21,11 +21,6 @@ import ShareLatestLocation from "../../../../src/components/views/beacon/ShareLa
 import { copyPlaintext } from "../../../../src/utils/strings";
 import { flushPromises } from "../../../test-utils";
 
-// Fake random strings to give a predictable snapshot for IDs
-jest.mock("matrix-js-sdk/src/randomstring", () => ({
-    randomString: () => "abdefghi",
-}));
-
 jest.mock("../../../../src/utils/strings", () => ({
     copyPlaintext: jest.fn().mockResolvedValue(undefined),
 }));

test/components/views/beacon/__snapshots__/BeaconListItem-test.tsx.snap

@@ -32,7 +32,7 @@ exports[`<BeaconListItem /> when a beacon is live and has locations renders beac
           class="mx_BeaconListItem_interactions"
         >
           <div
-            aria-describedby="mx_TooltipTarget_abdefghi"
+            aria-describedby="mx_TooltipTarget_vY7Q4uEh"
             tabindex="0"
           >
             <a

test/components/views/beacon/__snapshots__/DialogSidebar-test.tsx.snap

@@ -62,7 +62,7 @@ exports[`<DialogSidebar /> renders sidebar correctly with beacons 1`] = `
               class="mx_BeaconListItem_interactions"
             >
               <div
-                aria-describedby="mx_TooltipTarget_abdefghi"
+                aria-describedby="mx_TooltipTarget_vY7Q4uEh"
                 tabindex="0"
               >
                 <a

test/components/views/beacon/__snapshots__/ShareLatestLocation-test.tsx.snap

@@ -3,7 +3,7 @@
 exports[`<ShareLatestLocation /> renders share buttons when there is a location 1`] = `
 <DocumentFragment>
   <div
-    aria-describedby="mx_TooltipTarget_abdefghi"
+    aria-describedby="mx_TooltipTarget_vY7Q4uEh"
     tabindex="0"
   >
     <a