Prevent SegmentedControl-text from wrapping (#2174)

* Prevent SegmentedControl-text from wrapping

* Create poor-dots-play.md

Co-authored-by: Katie Langerman <langermank@github.com>

Author: simurai

.changeset/poor-dots-play.md

@@ -0,0 +1,5 @@
+---
+"@primer/css": patch
+---
+
+Prevent `SegmentedControl-text` from wrapping

src/segmented-control/segmented-control.scss

@@ -90,6 +90,8 @@
 // Text -----------------------------------------
 
 .SegmentedControl-text {
+  white-space: nowrap;
+
   // renders a visibly hidden "copy" of the text in bold, reserving box space for when text becomes bold on selected
   &[data-content]::before {
     display: block;