Merge pull request #7527 from kim5566/fix/null-check-error

fix check null error

.changeset/hip-suns-fix.md

@@ -0,0 +1,5 @@
+---
+'@backstage/core-components': patch
+---
+
+update the null check to use the optional chaining operator in case of non-null assertion operator is not working in function extractInitials(values: string)

packages/core-components/src/components/Avatar/utils.ts

@@ -28,5 +28,5 @@ export function stringToColor(str: string) {
 }
 
 export function extractInitials(value: string) {
-  return value.match(/\b\w/g)!.join('').substring(0, 2);
+  return value.match(/\b\w/g)?.join('').substring(0, 2);
 }