Turn off forced GC by default

[jotak]

Also rename EnableGC => ForceGC (GC is never disabled)

This should improve CPU usage at the expanse of memory, but memory is supposed to be capped with GOMEMLIMIT (which also triggers GC when reached) so this shouldn't be worrying

Dependencies

n/a

Checklist

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[jotak]

/hold

holding for perf tests

[codecov[bot]]

Codecov Report

Patch coverage: 75.00% and no project coverage change.

Comparison is base (2eae149) 39.51% compared to head (561ef60) 39.51%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #184 +/- ## ======================================= Coverage 39.51% 39.51% ======================================= Files 31 31 Lines 2394 2394 ======================================= Hits 946 946 Misses 1391 1391 Partials 57 57 ``` | [Flag](https://app.codecov.io/gh/netobserv/netobserv-ebpf-agent/pull/184/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/netobserv/netobserv-ebpf-agent/pull/184/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv) | `39.51% <75.00%> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files Changed](https://app.codecov.io/gh/netobserv/netobserv-ebpf-agent/pull/184?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv) | Coverage Δ | | |---|---|---| | [pkg/flow/tracer\_ringbuf.go](https://app.codecov.io/gh/netobserv/netobserv-ebpf-agent/pull/184?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv#diff-cGtnL2Zsb3cvdHJhY2VyX3JpbmdidWYuZ28=) | `21.87% <50.00%> (ø)` | | | [pkg/flow/tracer\_map.go](https://app.codecov.io/gh/netobserv/netobserv-ebpf-agent/pull/184?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv#diff-cGtnL2Zsb3cvdHJhY2VyX21hcC5nbw==) | `78.57% <83.33%> (ø)` | | | [pkg/agent/agent.go](https://app.codecov.io/gh/netobserv/netobserv-ebpf-agent/pull/184?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=netobserv#diff-cGtnL2FnZW50L2FnZW50Lmdv) | `37.84% <100.00%> (ø)` | |

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[msherif1234]

/lgtm

[jotak]

closing in favor of #185