fix: updated node toolbar to be more stable on zoom, fix success and error component tooltips, unselect nodes on flow opening

[lucaseduoli]

This pull request includes several changes to enhance the user interface, refactor code, and improve the functionality of the NodeToolbarComponent and related components. The most important changes include modifications to the scrollbar styles, refactoring of the NodeToolbarComponent, and updates to the NodeStatus component.

User Interface Enhancements:

• src/frontend/src/App.css: Updated scrollbar styles, including changing the background color of the scrollbar thumb and hover states.

Code Refactoring:

• src/frontend/src/CustomNodes/GenericNode/index.tsx: Refactored the toolbar component to use a div instead of NodeToolbar, and moved the toolbar rendering inside the main node container. [1] [2] [3] [4]
• src/frontend/src/pages/FlowPage/components/nodeToolbarComponent/index.tsx: Removed unnecessary zoom scaling logic and replaced SelectContent with SelectContentWithoutPortal for better performance. [1] [2] [3] [4] [5]

Component Updates:

• src/frontend/src/CustomNodes/GenericNode/components/NodeStatus/index.tsx: Added conditional styling to ShadTooltip and updated the layout and styling of validation messages and run timestamps. [1] [2]

Utility and Store Enhancements:

• src/frontend/src/stores/flowStore.ts: Added unselectAllNodesEdges utility function to ensure nodes and edges are unselected when updating the flow store. [1] [2]
• src/frontend/src/utils/reactflowUtils.ts: Removed unused type unselectAllNodesType. [1] [2]

Minor Fixes:

• src/frontend/src/style/classes.css: Enabled pointer events for the .react-flow__pane class.
• src/frontend/src/pages/FlowPage/components/PageComponent/index.tsx: Enabled fitView property for the flow page component.

[anovazzi1]

lgtm

[ogabrielluiz]

This test passes on all other branches so I can't merge this until it is fixed @lucaseduoli