enable osaka on local stack

[fluentcrafter]

This PR implements issue(s) #

Checklist

• I wrote new tests for my new core changes.
• I have successfully ran tests, style checker and build against my new changes locally.
• I have informed the team of any breaking changes if there are any.

---

Note

Enables Osaka fork in the local stack by updating genesis templates and init script, and bumps Besu package image tag for leader/follower nodes.

• Hardfork configuration (genesis/templates):
  • docker/config/l2-genesis-initialization/genesis-besu.json.template:
    • Set pragueTime to 0 and add osakaTime using %FORK_TIME%.
  • docker/config/l2-genesis-initialization/genesis-maru.json.template:
    • Base config elFork updated from Cancun to Prague.
    • Replace %PRAGUE_TIME% with %FORK_TIME% and set next fork to Osaka.
  • docker/config/l2-genesis-initialization/init.sh:
    • Simplify to a single fork_timestamp applied to both genesis files and coordinator-config-v2-hardforks.toml; remove separate Cancun/Prague handling.
• Docker Compose:
  • docker/compose-tracing-v2-fleet-ci-extension.yml: bump l2-node-besu and l2-node-besu-follower image tag to beta-v4.4-rc5-20251127094207-a7201ae.

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 63.98%. Comparing base (c49aa2c) to head (348d332).

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1803   +/-   ##
=========================================
  Coverage     63.98%   63.98%           
  Complexity     1524     1524           
=========================================
  Files           404      404           
  Lines         14545    14545           
  Branches       1562     1562           
=========================================
  Hits           9306     9306           
  Misses         4620     4620           
  Partials        619      619           

Flag	Coverage Δ		*Carryforward flag
hardhat	96.29% <ø> (ø)		Carriedforward from c49aa2c
kotlin	61.45% <ø> (ø)

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