Revert "[Breaking change] Use prometheus client v1 on Micrometer"

[brunobat]

Reverts #47978

There is a new plan:

1. Keep current extension as is until Quarkus 4.0 (whenever that happens)
2. Create a new extension called quarkus-micrometer-registry-prometheus-v1 now
3. Delete current quarkus-micrometer-registry-prometheuson Quarkus 4.0. Provide alternative on Quarkiverse.
4. Refactor: Stramline the main extension (quarkus-micrometer) and quarkus-micrometer-registry-prometheus-v1 to remove outdated code on Quarkus 4.0.
5. On the next LTS it would be good to mark for deprecation the old registry and support the new one.

[brunobat]

CC @gsmet

[quarkus-bot]

/cc @ebullient (micrometer)

[quarkus-bot]

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[quarkus-bot]

Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit 7e389ed.

✅ The latest workflow run for the pull request has completed successfully.

It should be safe to merge provided you have a look at the other checks in the summary.