[Logs UI] Refactor scroll position

[Zacqary]

Sub issue of #49154

Migrate away from Redux in determining the scroll position in the Logs UI.

Acceptance Criteria

• Remove the infra/store/local/log_position directory and replicate all functionality within hooks

[elasticmachine]

Pinging @elastic/logs-metrics-ui (Team:logs-metrics-ui)

[Zacqary]

Split some of this task out into #53044