Gantt Chart Fixes - Smoother tooltip

Description

Currently, when hovering over a bar in the gantt chart, a tooltip popup appears but its location is pretty jagged and inconsistent. Try to make the tooltip movement a lot smoother and maintain a minimum size so the text doesn't get squished.

We don't want this either:

Acceptance Criteria

• Gantt chart tooltip moves around much smoother/doesn't hop from place to place erratically. Alternatively, finding a fixed position for the tooltip on the page for that bar would also work, ie make it sticky until its no longer in view.
• Tooltip text box is a minimum size such that text wont get squished, if the cursor is in an area with limited space, make the tooltip dynamic so that it can appear in the top/bottom/left/right/immediate proximity of the bar while still being a minimum size.

Proposed Solution

• modify the placement & movement of the tooltip
• modify the sizing of the box components to have a min width

Mocks

No response

No file or test is named in the issue, so start by locating the Gantt chart tooltip entry point and its placement and sizing logic. Reproduce the erratic movement near constrained edges, then verify that the tooltip stays smooth and maintains a readable minimum size while adapting its position around the bar.