Draft: Refactor: clean up pagination and query refetch logic

What does this MR do and why?

This is a follow up based on the feedback provided in !206815 (merged)

Refactor: clean up pagination and query refetch logic

• Remove redundant watch block (Apollo refetches automatically)
• Extract resetPagination method to reduce duplication
• Use computed property for hasPreviousPage check

Changelog: changed EE: true

References

• !206815 (comment 2800497462)
• !206815 (comment 2800497473)
• !206815 (comment 2800497488)
• #569792 (closed)

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