Correctly combine sorts in post view cursor-based pagination (#4247)

* Update post_view.rs

* Update post_view.rs

* Update Cargo.toml

* Update post_view.rs

* fix

* Update post_view.rs

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Co-authored-by: SleeplessOne1917 <abias1122@gmail.com>
Co-authored-by: Dessalines <dessalines@users.noreply.github.com>