fix(fxa-shared): failure to injest all unit test results in CI

Because:

* an invalid token in the JUnit XML report for fxa-shared is causing test result ingestion to fail in CI

This commit:

* makes the invalid token print safe for reporting

Closes #FXA-10279

packages/fxa-shared/test/oauth/scopes.js

@@ -134,7 +134,10 @@ describe('oauth/scopes:', () => {
     ];
 
     INVALID_SCOPE_VALUES.forEach((source) => {
-      it(`scope "${source}" is invalid`, () => {
+      // Invalid characters, when used in test names, cause test result
+      // injestion errors in CI
+      const printSafeSource = source.replace(/\0/g, '\\0');
+      it(`scope "${printSafeSource}" is invalid`, () => {
         assert.throws(
           () => scopes.fromString(source),
           Error,