Refactor reasign table handle

[arhimondr]

Description

Re-assigning of partitioning scheme of source fragment is not necessary as it doesn't change along the way

Motivation and Context

Code simplification

Impact

Refactor

Test Plan

CI

Contributor checklist

• [X] Please make sure your submission complies with our development, formatting, commit message, and attribution guidelines.
• [X] PR description addresses the issue accurately and concisely. If the change is non-trivial, a GitHub Issue is referenced.
• [X] Documented new properties (with its default value), SQL syntax, functions, or other functionality.
• [X] If release notes are required, they follow the release notes guidelines.
• [X] Adequate tests were added if applicable.
• [X] CI passed.

== NO RELEASE NOTE ==