[PATCH yew-widget-toolkit] widget: map: fix info positioning on firefox

[Dominik Csapak <d.csapak@proxmox.com>]

On at least some firefox versions (tested with 140 ESR), drawing an SVG
circle with radius 0 does not position it correctly (it will in the SVG
origin instead of the specified coordinates). This lead to the info
popup on the map to be always relative to the top left of the whole map,
instead of above the selected point.

To fix this, make the circle have a radius of 1 and make it transparent.

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
 src/widget/charts/map/mod.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/widget/charts/map/mod.rs b/src/widget/charts/map/mod.rs
index 225a851..d6d142a 100644
--- a/src/widget/charts/map/mod.rs
+++ b/src/widget/charts/map/mod.rs
@@ -446,7 +446,8 @@ impl<T: MapPointData + 'static> yew::Component for MapComp<T> {
                     Circle::new()
                         .cx(center.x)
                         .cy(center.y)
-                        .r(0)
+                        .r(1)
+                        .fill("transparent")
                         .into_html_with_ref(self.info_anchor_ref.clone()),
                 );
                 info = Some(self.create_info(&args));
-- 
2.47.3