perf(llc): Move pinned messages pagination to SQL

[VelikovPetar]

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Linear: FLU-487
Review after: #2679

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• The code changes follow best practices
• Code changes are tested (add some information if not applicable)

Description of the pull request

• Refactor the pinned messages pagination to be performed on SQL level, instead of fetching all thread messages from DB, then paginating in-memory.
• Fix limit always being applied from the beginning of the fetched messages
• Add support for greaterThanOrEqual/lessThanOrEqual pagination

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