Write tests for lib/plugins/talawa_plugin_provider.dart

[palisadoes]

The Talawa code base needs to be 100% reliable. This means we need to have 100% unittest code coverage.

We will need unittests done for all methods, classes and functions found in this file.

Any widgets referenced in this file must also have unittests done

lib/plugins/talawa_plugin_provider.dart

PR Acceptance Criteria

• When complete this file must show 100% coverage when merged into the code base.
• The current code coverage for this file can be found here:
  • https://app.codecov.io/gh/PalisadoesFoundation/talawa?displayType=list
• The PR will show a report for the code coverage for the file you have added. You can use that as a guide

[imshivam-gupta]

@Ayush0Chaudhary @noman2002 I would like to work on this issue.. can you please assign it to me?

[Dante291]

@imshivam-gupta test has already been updated for this file in this PR with 100% coverage.