Fix PubSub isActive with Sharded PubSub

[sorilove]

Missing PubSubType.SHARDED and duplicate comparison of PubSubType.CHANNELS when comparing listeners size in updateIsActive function

Description

When calling the sunsubscribe function, the isActive information is incorrect and the redis client is forcibly disconnected.
In the updateIsActive function, we found that PubSubType.SHARDED was missing where the size of listeners is compared.
The listeners size of PubSubType.CHANNELS is being compared twice.
We fixed the issue and verified that sunsubscribe is working properly.

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Checklist

• Does npm test pass with this change (including linting)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?

[leibale]

Sorry for the delay, I was on vacation...

LGTM :)
Thanks for contributing!

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: -0.03 ⚠️

Comparison is base (d65a641) 95.63% compared to head (5bcb507) 95.60%.

❗ Current head 5bcb507 differs from pull request most recent head de94a43. Consider uploading reports for the commit de94a43 to get more accurate results

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2476      +/-   ##
==========================================
- Coverage   95.63%   95.60%   -0.03%     
==========================================
  Files         455      455              
  Lines        4579     4548      -31     
  Branches      528      520       -8     
==========================================
- Hits         4379     4348      -31     
  Misses        129      129              
  Partials       71       71              

Impacted Files	Coverage Δ
packages/client/lib/client/pub-sub.ts	79.85% <ø> (ø)

... and 1 file with indirect coverage changes

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