MFG Data fix

Append MFG data of Advertising and ScanResponse Packet.
By Spec Ble allows sending MFG data of more than 24 bytes by adding MFG data fields in the scan response packet, by default iOS concat it but android doesn't thus we manually concat mfg data spreaded across multiple packets

Author: biii-tech

packages/reactive_ble_mobile/android/src/main/kotlin/com/signify/hue/flutterreactiveble/converters/ManufacturerDataConverter.kt

@@ -2,16 +2,18 @@ package com.signify.hue.flutterreactiveble.converters
 
 import android.util.SparseArray
 
-fun extractManufacturerData(manufacturerData: SparseArray<ByteArray>?): ByteArray {
+fun extractManufacturerData(manufacturerData: SparseArray<ByteArray>): ByteArray {
     val rawData = mutableListOf<Byte>()
 
-    if (manufacturerData != null && manufacturerData.size() > 0) {
+    if (manufacturerData.size() > 0) {
         val companyId = manufacturerData.keyAt(0)
-        val payload = manufacturerData.get(companyId)
-
         rawData.add((companyId.toByte()))
         rawData.add(((companyId.shr(Byte.SIZE_BITS)).toByte()))
-        rawData.addAll(2, payload.asList())
+        rawData.addAll(manufacturerData.valueAt(0).asList())
+
+        for (i in 1 until manufacturerData.size()) {
+            rawData.addAll(manufacturerData.valueAt(i).asList())
+        }
     }
 
     return rawData.toByteArray()