## Description
This PR implements the following changes:
- Move the drag events from the Parent component's useEffect to the
`HeaderCell` component.
- Refactored the code. Inside the table component, we refactored the
code such that when SSP is disabled the component uses `StaticTable` and
when SSP enabled then we use `VirtualTable`.
- It also includes the fix for the following issue. Whenever the user
has a scroll to the bottom of the page, on clicking of add new button it
is expected that the scroll should move to the top but it wasn't
happening.
> Add a TL;DR when description is extra long (helps content team)
Fixes#20858
> if no issue exists, please create an issue and ask the maintainers
about this first
## Type of change
- Bug fix (non-breaking change which fixes an issue)
## How Has This Been Tested?
- Manual
- Test cases:
- Column name should appear on update from the property pane
- reorder whenever SSP is enabled
- On column re-size
- When a col is frozen
- When a col is unfrozen
- When all the headers or one of them is removed
- When sorted also should work
- Enable multi-row selection
- When in preview mode and back and forth(Check the above cases)
- When in Deployed mode
- Dragging of columns from the column header should work as expected
both in Deploy and Published mode.
- Cypress
### Test Plan
> Add Testsmith test cases links that relate to this PR
### Issues raised during DP testing
> Link issues raised during DP testing for better visiblity and tracking
(copy link from comments dropped on this PR)
## Checklist:
### Dev activity
- [x] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] PR is being merged under a feature flag
### QA activity:
- [ ] Test plan has been approved by relevant developers
- [ ] Test plan has been peer reviewed by QA
- [ ] Cypress test cases have been added and approved by either SDET or
manual QA
- [ ] Organized project review call with relevant stakeholders after
Round 1/2 of QA
- [ ] Added Test Plan Approved label after reveiwing all Cypress test
