Initialize and store PRv2 environment in cache

[pgarg66]

Problem

Program runtime V2 environment is created every time a program is loaded. This can be optimized.

Summary of Changes

Store the environment in the cache.
Another refactor is needed to reuse the cached environment.

Fixes #

[codecov]

Codecov Report

Merging #32812 (7284ad2) into master (c73a56f) will decrease coverage by 0.1%.
Report is 2 commits behind head on master.
The diff coverage is 72.4%.

❗ Current head 7284ad2 differs from pull request most recent head b8f0b92. Consider uploading reports for the commit b8f0b92 to get more accurate results

@@            Coverage Diff            @@
##           master   #32812     +/-   ##
=========================================
- Coverage    82.0%    82.0%   -0.1%     
=========================================
  Files         785      785             
  Lines      211911   211928     +17     
=========================================
- Hits       173818   173804     -14     
- Misses      38093    38124     +31