feat: Add feature flag for year of birth field (#447)

.env

@@ -25,3 +25,4 @@ DISABLE_ENTERPRISE_LOGIN=''
 REGISTER_CONVERSION_COOKIE_NAME=null
 ENABLE_PROGRESSIVE_PROFILING=''
 MARKETING_EMAILS_OPT_IN='false'
+COLLECT_YEAR_OF_BIRTH='true'

.env.test

@@ -23,3 +23,4 @@ WELCOME_PAGE_SUPPORT_LINK='http://localhost:1999/welcome'
 DISABLE_ENTERPRISE_LOGIN=''
 REGISTER_CONVERSION_COOKIE_NAME='openedx-user-register-conversion'
 MARKETING_EMAILS_OPT_IN='false'
+COLLECT_YEAR_OF_BIRTH='true'

src/index.jsx

@@ -40,6 +40,7 @@ initialize({
         REGISTER_CONVERSION_COOKIE_NAME: process.env.REGISTER_CONVERSION_COOKIE_NAME || null,
         ENABLE_PROGRESSIVE_PROFILING: process.env.ENABLE_PROGRESSIVE_PROFILING || false,
         MARKETING_EMAILS_OPT_IN: process.env.MARKETING_EMAILS_OPT_IN || 'false',
+        COLLECT_YEAR_OF_BIRTH: process.env.COLLECT_YEAR_OF_BIRTH || 'true',
       });
     },
   },