Speedup launching CLI commands by ensuring pycache is available or could be created

This MR provides an alternative approach to !732 (closed).
❗ Only one of them should be merged, not both.

It speedups execution of Clive commands like clive--help and others by around 2,5x-3x, depending on the machine.

Problem

CLI commands (e.g. clive --help) were significantly slower in production (mainnet) env.

• Reduced execution time: ~1.5s → ~0.6s (Ryzen 5600x)

Benchmark Comparison

Before:

1. Local dev image: 0.577s
2. docker run -it registry.gitlab.syncad.com/hive/clive:testnet-4ee2517a --cli: 0.577s (same as 1)
3. docker run -it registry.gitlab.syncad.com/hive/clive:4ee2517a --cli: 0.902s
4. start_clive_cli.sh: 1.567s

After:

1. Local dev image: 0.577s
2. docker run -it registry.gitlab.syncad.com/hive/clive:testnet-c3cecc71 --cli: 0.577s (same as 1)
3. docker run -it registry.gitlab.syncad.com/hive/clive:c3cecc71 --cli: 0.605s
   • Still ~5–8% slower; likely caused by the minimal base image.
4. start_clive_cli.sh: 0.605s (same as 3)

Root Cause

• Difference between (2) and (3):
  Mainnet base image is a minimal image and was missing __pycache__ for standard Python modules when compared to testnet base image (e.g. /usr/lib/python3.12/json/__pycache__).

• Difference between (3) and (4):
  Missing __pycache__ for the venv
  (e.g. /python_venv/lib/python3.12/site-packages/wax/__pycache__/).

  • Running with docker run ... → UID = 2001 (cache creation works).
  • Running via start_clive_cli.sh → UID = host UID (e.g. 1000), no write permissions → cache not created.

Fixes in this MR

1. Add prebuilt cache for Python standard modules in the generated python_runtime image
   • Actual fix in: common-ci-configuration!92 (merged)
   • Result: Clive image size increased 67 MiB → 71 MiB
2. Grant group write permissions for the venv cache
   • Needed because UID changes from 2001 → host UID.
3. Additional: grant group write permissions for /clive.