fix(auth): fix ensure change event and get() have consistent results

[cipchk]

• close tokenService.change emits value before it is actually set ng-alain#2087

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ng-alain/delon/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Application (the showcase website) / infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[codecov]

Codecov Report

Merging #1339 (65aeed9) into master (52bac24) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1339   +/-   ##
=======================================
  Coverage   95.87%   95.88%           
=======================================
  Files         270      270           
  Lines        8300     8301    +1     
  Branches     1634     1634           
=======================================
+ Hits         7958     7959    +1     
  Misses        157      157           
  Partials      185      185           

Impacted Files	Coverage Δ
packages/auth/src/token/token.service.ts	100.00% <100.00%> (ø)

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[ng-alain-bot]

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