Activate start menu window only after search focus was set

Start menu window was activated early in the process of its creation.
This means it was receiving input before focus was set to search bar.
And that may have lead to unwanted use of keyboard accelerators.

We need to make sure that window is activated (receives input) only once
focus was set to search box.

Fixes #1068

Author: ge0rdi

Src/StartMenu/StartMenuDLL/MenuContainer.cpp

@@ -8237,7 +8237,7 @@ HWND CMenuContainer::ToggleStartMenu( int taskbarId, bool bKeyboard, bool bAllPr
 		s_UserPicture.Init(pStartMenu);
 	}
 	dummyRc.right++;
-	pStartMenu->SetWindowPos(NULL,&dummyRc,SWP_NOZORDER);
+	pStartMenu->SetWindowPos(NULL,&dummyRc,SWP_NOZORDER|SWP_NOACTIVATE);
 
 	memset(&s_StartRect,0,sizeof(s_StartRect));
 
@@ -8566,7 +8566,7 @@ HWND CMenuContainer::ToggleStartMenu( int taskbarId, bool bKeyboard, bool bAllPr
 	// reposition start menu
 	if (bTopMost || !s_bBehindTaskbar)
 		animFlags|=AW_TOPMOST;
-	pStartMenu->SetWindowPos((animFlags&AW_TOPMOST)?HWND_TOPMOST:HWND_TOP,corner.x,corner.y,0,0,(initialMonitor!=s_MenuMonitor && !bAllPrograms)?SWP_NOMOVE|SWP_NOSIZE:0);
+	pStartMenu->SetWindowPos((animFlags&AW_TOPMOST)?HWND_TOPMOST:HWND_TOP,corner.x,corner.y,0,0,((initialMonitor!=s_MenuMonitor && !bAllPrograms)?SWP_NOMOVE|SWP_NOSIZE:0)|SWP_NOACTIVATE);
 
 	pStartMenu->InitItems();
 	pStartMenu->m_MaxWidth=s_MainMenuLimits.right-s_MainMenuLimits.left;