HLE/Applets: Give each applet its own block of heap memory, and use that when creating the framebuffer shared memory block.

src/core/hle/applets/swkbd.cpp

@@ -40,8 +40,12 @@ ResultCode SoftwareKeyboard::ReceiveParameter(Service::APT::MessageParameter con
     memcpy(&capture_info, parameter.data, sizeof(capture_info));
 
     using Kernel::MemoryPermission;
-    framebuffer_memory = Kernel::SharedMemory::Create(nullptr, capture_info.size, MemoryPermission::ReadWrite,
-                                                      MemoryPermission::ReadWrite, 0, Kernel::MemoryRegion::BASE, "SoftwareKeyboard Memory");
+    // Allocate a heap block of the required size for this applet.
+    heap_memory = std::make_shared<std::vector<u8>>(capture_info.size);
+    // Create a SharedMemory that directly points to this heap block.
+    framebuffer_memory = Kernel::SharedMemory::CreateForApplet(heap_memory, 0, heap_memory->size(),
+                                                               MemoryPermission::ReadWrite, MemoryPermission::ReadWrite,
+                                                               "SoftwareKeyboard Memory");
 
     // Send the response message with the newly created SharedMemory
     Service::APT::MessageParameter result;