Deepfreeze essential parts of the encodings module. ### Description

This is a split off from #3582.

Deepfreeze essential parts of encodings module (encodings.\__init__, encodings.utf_8, and encodings.aliases), which is required during the Python bootstrap.

0000000000000000000000000000000000000000 f1498a2747d5dc968dad2d872181d9cad2d80a48 jupyter <jupyter@data-collection2-susnato.c.rishabh-experiments.internal> 1705136699 +0000	clone: from https://github.com/pyodide/pyodide.git

0000000000000000000000000000000000000000 f1498a2747d5dc968dad2d872181d9cad2d80a48 jupyter <jupyter@data-collection2-susnato.c.rishabh-experiments.internal> 1705136699 +0000	clone: from https://github.com/pyodide/pyodide.git
