[BUG] Tooltips are not displayed in SVG

## **Describe the bug**
I'm not able to see any hover tooltips in your [examples](https://github.com/Kotlin/kandy/blob/main/examples/notebooks/lets-plot/guides/tooltips.ipynb), nor if I try it myself. Since I'm new to Notebooks and this library maybe I'm doing something wrong,, then help would me much appreciated.

```
val time = listOf("2021", "2022", "2023", "2024")
val accesses = listOf(150, 200, 175, 250)
val dataFrame = dataFrameOf(
"pointInTime" to time,
"numberOfAccesses" to accesses
)

return dataFrame.plot {
bars {
x("pointInTime")
y("numberOfAccesses")

tooltips{
line("${value("numberOfAccesses")}")
}
}
}.toSVG()
```

## **Expected behavior**
Hovering over a point or bar should show the tooltip

## **Actual Behavior**
Hovering over a point or bar doesn't show the tooltip

## **Screenshots**
Expected:

Current:
https://github.com/Kotlin/kandy/blob/main/examples/notebooks/lets-plot/guides/tooltips.ipynb

## **Library Version, Tool version, and Environment**
(please complete the following information):
- Library version: 0.7.0
- Kotlin-Gradle environment: kotlin 2.0.21
- Tried in Chrome: 131.0.6778.86 and Firefox: 133

## **Additional information**

Reproduce the report using examples/notebooks/lets-plot/guides/tooltips.ipynb and the supplied Kotlin plot ending in toSVG(). First compare the notebook's rendered SVG with the expected tooltip behavior in Chrome or Firefox. Done means hovering a point or bar displays the configured numberOfAccesses tooltip.

Written by the indexing model from the issue text.