Couple things going on here to unpack:

• this reverts chore(ci): reduce cache bloat by saving only on main #8204
• b/c that was reverted our CI times went from 4/5 min back to 8min because we had to recompile things during setup.yml in the yarn step. this was adding ~2min back to each CI action.
• we were hitting our 10GB limit before but the majority of that was because we were adding -${{github.sha}} to a bunch of our tooling caches, creating a bunch of extra cache entries for no reason

Fixes:

• removes the ${{github.sha}} from the key, unnecessary.
• caches node_modules again to save CI time again
• I increased our org cache limit to 20GB for now, we only pay for actual usage, things get auto-purged after 7 days anyway

• i'll manually clear some cache entries as well