[9.0](backport #43063) filebeat,libbeat,x-pack/filebeat: clean up state store types

[mergify]

Proposed commit message

filebeat,libbeat,x-pack/filebeat: clean up state store types

This centralises the state store to simplify and clarify the use of persistent
stores.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

Disruptive User Impact

Author's Checklist

• [ ]

How to test this PR locally

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Logs

---

This is an automatic backport of pull request #43063 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of df62e10 has failed:

On branch mergify/bp/9.0/pr-43063
Your branch is up to date with 'origin/9.0'.

You are currently cherry-picking commit df62e10c1.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   filebeat/beater/store.go
	modified:   filebeat/input/default-inputs/inputs.go
	modified:   filebeat/input/default-inputs/inputs_linux.go
	modified:   filebeat/input/default-inputs/inputs_windows.go
	modified:   filebeat/input/filestream/environment_test.go
	modified:   filebeat/input/filestream/input.go
	modified:   filebeat/input/filestream/input_test.go
	modified:   filebeat/input/filestream/internal/input-logfile/manager.go
	modified:   filebeat/input/filestream/internal/input-logfile/store.go
	modified:   filebeat/input/filestream/internal/input-logfile/store_test.go
	modified:   filebeat/input/journald/input.go
	modified:   filebeat/input/journald/input_filtering_test.go
	modified:   filebeat/input/journald/input_stub.go
	modified:   filebeat/input/v2/input-cursor/manager.go
	modified:   filebeat/input/v2/input-cursor/store.go
	modified:   filebeat/input/v2/input-cursor/store_test.go
	modified:   filebeat/input/winlog/input.go
	modified:   filebeat/registrar/registrar.go
	modified:   libbeat/statestore/store.go
	modified:   x-pack/filebeat/input/awss3/input.go
	modified:   x-pack/filebeat/input/awss3/s3_input.go
	modified:   x-pack/filebeat/input/awss3/states.go
	modified:   x-pack/filebeat/input/awss3/states_test.go
	modified:   x-pack/filebeat/input/azureblobstorage/input.go
	modified:   x-pack/filebeat/input/cel/input.go
	modified:   x-pack/filebeat/input/cel/input_manager.go
	modified:   x-pack/filebeat/input/default-inputs/inputs.go
	modified:   x-pack/filebeat/input/default-inputs/inputs_aix.go
	modified:   x-pack/filebeat/input/default-inputs/inputs_darwin.go
	modified:   x-pack/filebeat/input/default-inputs/inputs_other.go
	modified:   x-pack/filebeat/input/default-inputs/inputs_windows.go
	modified:   x-pack/filebeat/input/gcs/input.go
	modified:   x-pack/filebeat/input/httpjson/input.go
	modified:   x-pack/filebeat/input/httpjson/input_manager.go
	modified:   x-pack/filebeat/input/o365audit/input.go
	modified:   x-pack/filebeat/input/salesforce/input.go
	modified:   x-pack/filebeat/input/salesforce/input_manager.go
	modified:   x-pack/filebeat/input/salesforce/input_manager_test.go
	modified:   x-pack/filebeat/input/streaming/input.go
	modified:   x-pack/filebeat/input/streaming/input_manager.go
	modified:   x-pack/filebeat/input/unifiedlogs/input.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   filebeat/beater/filebeat.go
	both modified:   filebeat/input/journald/environment_test.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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