Prefix select row group errors with "Error:" announcement (#89)

* Prefix select row group errors with error announcement

* Update changelog

* Tidy up

Author: jemmaSlater

CHANGELOG.md

@@ -16,6 +16,10 @@ Allowed headings:
 
 ## [Unreleased]
 
+### Changed
+
+* When an error is displayed on a `SelectRowGroup` component, then the error content description will have the prefix "Error:"
+
 ## [4.3.1] - 2022-12-28
 
 ### Additions

components/src/main/java/uk/gov/hmrc/components/molecule/selectrow/SelectRowGroup.kt

@@ -92,8 +92,15 @@ class SelectRowGroup @JvmOverloads constructor(
     fun setError(error: String) {
         binding.selectRowError.apply {
             text = error
-            if (error.isNotEmpty()) announceForAccessibility(error)
-            visibility = if (error.isNotEmpty()) View.VISIBLE else View.GONE
+            if (error.isNotEmpty()) {
+                val errorContentDescription = context.getString(R.string.accessibility_error_prefix, error)
+                contentDescription = errorContentDescription
+                announceForAccessibility(errorContentDescription)
+                visibility = View.VISIBLE
+            } else {
+                contentDescription = error
+                visibility = View.GONE
+            }
         }
     }