Add block override support for cloud egress

Block override is now support for cloud egress.

@chrfox

Author: tdoucett-ms

microsoft-365/compliance/dlp-chrome-learn-about.md

@@ -33,7 +33,7 @@ The Microsoft Compliance Extension enables you to audit and manage the following
 
 activity |description  | supported policy actions|
 |---------|---------|---------|
-|file copied to cloud  | Detects when a user attempts to upload a sensitive item to a restricted service domain through the Chrome browser |audit, block|
+|file copied to cloud  | Detects when a user attempts to upload a sensitive item to a restricted service domain through the Chrome browser |audit, block with override, block|
 |file printed  |Detects when a user attempts to print a sensitive item that is open in the Chrome browser to a local or network printer |audit, block with override, block|
 |file copied to clipboard |Detects when a user attempts to copy information from a sensitive item that is being viewed in the Chrome browser and then paste it into another app, process, or item. |audit, block with override, block|
 |file copied to removable storage    | Detects when a user attempts to copy a sensitive item or information from a sensitive item that is open in the Chrome browser to removable media or USB device |audit, block with override, block|