Merge branch 'jgfouca/cime_update_2024_02_15' into master (PR E3SM-Pr…

…oject#6243)

... to 662369b2b8e9f87993cad81bbe71638bfdefdc8a

Fixes:
1) Updates to cprnc build system to fix various issues
2) Fix a string that should be raw
3) case.submit: Fix no-batch mode
4) fix issue getting correct parameters for job subgroups
5) jenkins_generic_job: Should probe branch of main src repo, not cime repo
6) check_input: If chksum is off, don't try to download_checksum_file
7) Fix .env_mach_specific.sh when unsetting env
8) Fix recursive call
9) Update initial conditions in PGN and TSC tests.
10) fix component-only (no coupler) testing.

[BFB]