Fix for missing foreign key constraint on app import

[shaurya-sharma064]

closes: #9695

Problem:
Importing the app breaks the foreign key constraints in the table.

Fix:
Created foreign keys separately after the creation of tables as keys were not forming due to the sequence of table creation. Had to use a bunch of inner transactions in the process.

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✅ shaurya-sharma064
❌ Shaurya Sharma

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