Fixing logic error in talawa_plugin_provider.dart for visibility of plugins

[Dante291]

What kind of change does this PR introduce?

Fixing logic error in this file.

Issue Number:

Fixes #2141

Did you add tests for your changes?

No

Have you read the contributing guide?

Yes

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (3ee0c25) 79.85% compared to head (5d547e3) 79.86%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2168      +/-   ##
===========================================
+ Coverage    79.85%   79.86%   +0.01%     
===========================================
  Files          152      152              
  Lines         7456     7450       -6     
===========================================
- Hits          5954     5950       -4     
+ Misses        1502     1500       -2     

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[palisadoes]

Please update the corresponding test file for your PR to get its test coverage up to 100%

[Dante291]

@noman2002 @palisadoes review please.

[Dante291]

@palisadoes @noman2002 The reason why PR target workflow is getting failed is because of this issue in first-interaction.

[palisadoes]

@palisadoes @noman2002 The reason why PR target workflow is getting failed is because of this issue in first-interaction.

Thanks. I've assigned reviewers. Please work with them to get this merged.

[palisadoes]

@SiddheshKukade please take a look

[Dante291]

@Ayush0Chaudhary Could you review this and get this merge.