Reset sync warning message needs to be Refactored

[GeetaSarvadnya]

Description

Reset sync warning message needs to be Refactored

Steps to Reproduce

1. Current reset sync message doesn't have information like Reset sync clears the data which is stored on the sync server
   

Actual result:

Expected result:

Reset sync message needs to be refactored

Reproduces how often:

Easy

Brave version (brave://version info)

Brave	0.57.7 Chromium: 71.0.3578.53 (Official Build) beta (64-bit)
Revision	599fb72e740eab9d10609f1ed28a2ad669f82c1a-refs/branch-heads/3578@{#669}
OS	Windows

Reproducible on current release:

• Does it reproduce on brave-browser dev/beta builds? Yes

Website problems only:

• Does the issue resolve itself when disabling Brave Shields? NA
• Is the issue reproducible on the latest version of Chrome? NA

Additional Information

#2134

[GeetaSarvadnya]

Verification passed on

Brave	0.59.8 Chromium: 71.0.3578.98 (Official Build) beta (64-bit)
Revision	15234034d19b85dcd9a03b164ae89d04145d8368-refs/branch-heads/3578@{#897}
OS	Windows

Verified passed with

Brave	0.58.12 Chromium: 71.0.3578.80 (Official Build) (64-bit)
Revision	2ac50e7249fbd55e6f517a28131605c9fb9fe897-refs/branch-heads/3578@{#860}
OS	Mac OS X

• Verified STR and test plan in Sync v2 brave-core#1019. Follow up issues Sync chain not being reset when Main device is removed #2575 and no error message for bad behavior when unable to connect to sync servers #2577 logged.
  Main Device:
  
  Remote Device:
  

Verification PASSED on Ubuntu 18.04.1 x64 using the following build:

Brave	0.58.14 Chromium: 71.0.3578.98 (Official Build) (64-bit)
Revision	15234034d19b85dcd9a03b164ae89d04145d8368-refs/branch-heads/3578@{#897}
OS	Linux