fix(logs): improve timestamp precision in container logs

[MayorFaj]

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Does this PR introduce a user-facing change?

None

Fixes #27691
This pull request updates the timestamp formatting in container logs to provide higher precision.

• Logging improvement:
  • In pkg/api/handlers/compat/containers_logs.go, the timestamp format for log entries was changed from time.RFC3339 to time.RFC3339Nano, allowing log timestamps to include nanosecond precision.

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[baude]

if we are following docker behavior, then its likely not a bug. else, LGTM at quick glance.