light/dark toggle fire resize event

fixes sizing issues in plotly-python and heatmaply
fixes non-displaying leaflet

Author: gordonwoodhull

news/changelog-1.7.md

@@ -1,4 +1,10 @@
-All changes included in 1.7:
+# v1.8 backports
+
+## In this release
+
+- ([#12625](https://github.com/quarto-dev/quarto-cli/pull/12625)): Fire resize event on window when light/dark toggle is clicked, to tell widgets to resize.
+
+# v1.7 changes
 
 ## Regression fixes
 

src/resources/formats/html/templates/quarto-html-before-body.ejs

@@ -186,6 +186,7 @@
       toggleColorMode(toAlternate);
       setStyleSentinel(toAlternate);
       toggleGiscusIfUsed(toAlternate, darkModeDefault);
+      window.dispatchEvent(new Event('resize'));
     };
 
     <% if (respectUserColorScheme) { %>