Update tvm-supported-os.md

After confirming with MDVM PG team members, I think it is a good clarification for customers if we highlight that MDVM is going to keep working regardless of if Defender is running in active or passive mode on the onboarded endpoint.

Author: EdgarPMIA

defender-vulnerability-management/tvm-supported-os.md

@@ -23,6 +23,9 @@ Before you begin, ensure that you meet the following operating system or platfor
 > [!NOTE]
 > The supported systems and platforms for vulnerability management may be different from the [Minimum requirements for Microsoft Defender for Endpoint](/defender-endpoint/minimum-requirements) list.
 
+> [!IMPORTANT]
+> Device vulnerability information regularly gathered from devices onboarded in Defender for Endpoint when Defender is running in active mode, it is also gathered when Defender is running in passive mode. This capability is available across all Windows, MacOS and Linux supported operating systems.
+
 ## Capabilities per supported operating systems (OS) and platforms
 
 In the following table, "Yes" indicates that a vulnerability management capability is supported for the OS or platform on that row.