Conditional checks in the Customizer

Right now, we're letting the user access the customizer without verifying if they've completed the module, or how many bots they've minted.

Need to implement checks for this, and accordingly update modal's copy.

Seems like a priority to me @bhaskarSingh, what do you think?

Start at the Customizer entry point and inspect how module completion and minted-bot counts are currently represented. Trace the access decision and modal copy, then verify both checks and the corresponding messages in the running app.

Written by the indexing model from the issue text.