Fix bugs around mass selection/single selection/drag and drop

[MrFlashAccount]

Pull Request Description

Closes: https://github.com/enso-org/cloud-v2/issues/1633

This PR:

1. Refactors the Selection Brush component - improve visuals, improved performance, added support for scrolling containers
2. Now dragging can only be started over a selected row.
3. If a row is not selected, Brush selection is applied
4. This PR isolates the root view from Portals, this guaranties that portals will always be over the root view
5. Adds new utilities and hooks.
6. Fixes floating bug when selection doesn't happen on click
7. Changes the behavior of unselection: from blacklist (everything except a few elements) to whitelist (if user clicks on Special component - unselect). Special component can be placed anywhere we want. clicks on other elements are ignored,

Important Notes

Checklist

Please ensure that the following checklist has been satisfied before submitting the PR:

• The documentation has been updated, if necessary.
• Screenshots/screencasts have been attached, if there are any visual changes. For interactive or animated visual changes, a screencast is preferred.
• All code follows the
  Scala,
  Java,
  TypeScript,
  and
  Rust
  style guides. In case you are using a language not listed above, follow the Rust style guide.
• Unit tests have been written where possible.
• If meaningful changes were made to logic or tests affecting Enso Cloud integration in the libraries,
  or the Snowflake database integration, a run of the Extra Tests has been scheduled.
  • If applicable, it is suggested to paste a link to a successful run of the Extra Tests.

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[MrFlashAccount]

Not ideal, but working solution to ignore selection start over selected rows