Change delete account error message

[AlexeyBarabash]

Follow-up for brave/brave-core#13562
Found while test #22884 (comment)

Change error text
Could not join this sync chain. Account was deleted. => Could not join this sync chain. The sync chain was deleted.

[kjozwiak]

The above requires 1.49.90 or higher for 1.49.x verification 👍

[stephendonner]

Verified PASSED using the following builds:

macOS:

Brave	1.49.90 Chromium: 110.0.5481.77 (Official Build) beta (64-bit)
Revision	65ed616c6e8ee3fe0ad64fe83796c020644d42af-refs/branch-heads/5481@{#839}
OS	Windows 10 Version 22H2 (Build 19045.2546)

Windows 10:

Brave	1.49.90 Chromium: 110.0.5481.77 (Official Build) beta (x86_64)
Revision	65ed616c6e8ee3fe0ad64fe83796c020644d42af-refs/branch-heads/5481@{#839}
OS	macOS Version 11.7.3 (Build 20G1116)

Android:

1.49.90, Chromium 110.0.5481.77 on a Google Pixel XL (arm64) running Android 9

Steps:

1. installed 1.49.90 on both Android and macOS
2. launched Brave
3. created the sync chain on macOS
4. displayed the QR code and took a screenshot
5. deleted the sync chain from macOS
6. on Android, tried to enter the sync chain by scanning the QR code in the screenshot
7. repeated the above, using Windows 10

Confirmed the error message was Could not join this sync chain. The sync chain was deleted.

Android

example	example	example	example	example	The sync chain was deleted.

macOS

example	example	The sync chain was deleted.

Windows 10

example	example	The sync chain was deleted.

[stephendonner]

Note: I covered macOS, Android, and Windows 10 in the course of testing, but only marked QA Pass-macOS, as we might want to run through at least another desktop test on Windows 10, and on Android, do Android <-> Android etc.

[Uni-verse]

Verified on Samsung GS 21 version:

Brave	1.49.118 Chromium: 111.0.5563.50 (Official Build) (64-bit) 
Revision	39f3dfc5023fe60997adc4f6cf5439cfa3e6968a-refs/branch-heads/5563@{#903}
OS	Android 13; Build/TP1A.220624.014

Test Plan:

Steps:

1. installed 1.49.118 on both Android
2. launched Brave
3. created the sync chain on macOS
4. displayed the QR code and took a screenshot
5. deleted the sync chain from macOS
6. on Android, tried to enter the sync chain by scanning the QR code in the screenshot
7. Repeated with another Android device

• Ensured delete sync account copy change
• Ensured deleting sync chain started on another Android device will still display the error message