Add invalid submission redirect

Author: Maddy-Cloudflare

public/__redirects

@@ -2315,6 +2315,7 @@
 /cloudflare-one/email-security/settings/configure-text-add-ons/ /cloudflare-one/email-security/settings/detection-settings/configure-text-add-ons/ 301
 /cloudflare-one/email-security/settings/trusted-domains/ /cloudflare-one/email-security/settings/detection-settings/trusted-domains/ 301
 /cloudflare-one/email-security/monitoring/search-email/ /cloudflare-one/email-security/investigation/search-email/ 301
+/cloudflare-one/email-security/settings/invalid-submissions/ /cloudflare-one/email-security/reclassifications/invalid-submissions/ 301
 
 # ============================================================================
 # DYNAMIC REDIRECTS