Inline Toolbar rerenders on each selection change

On [selectionchange](https://github.com/codex-team/editor.js/blob/next/src/components/modules/ui.ts#L350) [tryToShow](https://github.com/codex-team/editor.js/blob/next/src/components/modules/toolbar/inline.ts#L149) Inline Toolbar method is called which calls `open` method causes Inline Toolbar re-render. Moreover, it causes shortcuts duplication and other non-efficient operations.

We need to show Inline Toolbar only once selection is end or do not re-render it if selection is changed over the same Block