[M110] [FilesTrash] Fix text for nudge label on first trash

The CL:4093977 updated the loadTimeData strings for ChromeOS to move
location, this has caused the initialisation of the loadTimeData to come
after the NudgeContainer so when the TRASH_NUDGE_LABEL is retrieved on
initialisation, it is not present. This updates the text to instead be
retrieved on first usage of the nudge not on initialisation.

Before: http://screen/8oWyA6SthnhwYHz
After: http://screen/9AYdLiAmvqVdHSs

(cherry picked from commit 80d3740)

Fixed: b:264804875
Test: CQ
Change-Id: I83bcf82c4fcd46f73047a05d8e851e33d769f919
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4144341
Commit-Queue: Wenbo Jie <wenbojie@chromium.org>
Reviewed-by: Wenbo Jie <wenbojie@chromium.org>
Commit-Queue: Ben Reich <benreich@chromium.org>
Auto-Submit: Ben Reich <benreich@chromium.org>
Cr-Original-Commit-Position: refs/heads/main@{#1090185}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4152930
Cr-Commit-Position: refs/branch-heads/5481@{#208}
Cr-Branched-From: 130f3e4-refs/heads/main@{#1084008}

ui/file_manager/file_manager/containers/nudge_container.ts

@@ -196,7 +196,7 @@ export class NudgeContainer {
         'blur', (_: Event) => this.closeNudge(this.currentNudgeType_), config);
 
     this.nudge_.anchor = anchor;
-    this.nudge_.content = info.content;
+    this.nudge_.content = info.content();
     this.nudge_.direction = info.direction;
 
     this.nudge_.show();
@@ -317,7 +317,7 @@ interface NudgeInfo {
   anchor: () => HTMLElement | null;
 
   // The string contents of the nudge.
-  content: string;
+  content: () => string;
 
   // The direction that nudge appears relative to the anchor. For more
   // explanation on the various `NudgeDirection`'s look in `xf_nudge.ts` file.
@@ -335,15 +335,15 @@ interface NudgeInfo {
 export const nudgeInfo: {[type in NudgeType]: NudgeInfo} = {
   [NudgeType['TEST_NUDGE']]: {
     anchor: () => document.querySelector<HTMLDivElement>('div#test'),
-    content: 'Test content',
+    content: () => 'Test content',
     direction: NudgeDirection.BOTTOM_ENDWARD,
     expiryDate: new Date(2999, 1, 1),
   },
   // A nudge that is shown when an item is first sent to the trash.
   [NudgeType['TRASH_NUDGE']]: {
     anchor: () =>
         document.querySelector<HTMLSpanElement>('span[root-type-icon="trash"]'),
-    content: str('TRASH_NUDGE_LABEL'),
+    content: () => str('TRASH_NUDGE_LABEL'),
     direction: NudgeDirection.BOTTOM_ENDWARD,
     // Expire this after 4 releases (expires when M112 hits Stable).
     expiryDate: new Date(2023, 4, 6),

ui/file_manager/file_manager/containers/nudge_container_unittest.ts

@@ -159,7 +159,7 @@ export async function testAriaDescribedByElementIsAdded() {
 
   assertNotEquals(describedByElement, null);
   assertEquals(
-      describedByElement!.innerText, nudgeInfo[NudgeType.TEST_NUDGE].content);
+      describedByElement!.innerText, nudgeInfo[NudgeType.TEST_NUDGE].content());
 }
 
 /**