Added silence timeout as floating point

Test/Components/DataSources/UDPStreamerClient/UDPStreamerClientTest.h

@@ -62,6 +62,12 @@ public:
      */
     bool TestInitialise_MulticastMode_Valid();
 
+    /**
+     * @brief Tests Initialise with a sub-second float32 SilenceTimeout (0.25 s)
+     * forwarded through to the UDPSClient receiver.
+     */
+    bool TestInitialise_SilenceTimeoutFloat();
+
     /**
      * @brief Tests that DataPort defaults to Port+1 when MulticastGroup is
      * set but DataPort is absent.