Change of query post by organization

[AVtheking]

Describe the bug
Post by organisation query need to be changed according to this PR #1722

Additional details
As PR #1722 changed the implementation of the PostByOrganization query,this need to be changed in admin and mobile repo as soon as possible

Potential internship candidates
Please read this if you are planning to apply for a Palisadoes Foundation internship #359

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[AVtheking]

@palisadoes @Cioppolo14 if no one is working on this then assign it to me because it needs to be resolved for the proper functioning of the app.Although I already have 2 issues assigned.

[github-actions]

This issue did not get any activity in the past 10 days and will be closed in 180 days if no update occurs. Please check if the develop branch has fixed it and report again or close the issue.