window: move size reporting to animation begin callback (#9298)

* window: fix resizes with an update callback

* window: fixup sendWindowSize

Remove the size argument from sendWindowSize, since it is now a member of the Window class
and we don't want any mismatches between m_vRealSize and what we report.

Remove sendWindowSize from mapWindow, since we shouldn't need it.

* window: sendWindowSize on animation begin

* window: move most calls to sendWindowSize to the animation begin
callback

* window: remove sendWindowSize in unmanaged if not fullscreen

src/desktop/Workspace.cpp

@@ -624,7 +624,7 @@ void CWorkspace::forceReportSizesToWindows() {
         if (w->m_pWorkspace != m_pSelf || !w->m_bIsMapped || w->isHidden())
             continue;
 
-        w->sendWindowSize(w->m_vRealSize->goal(), true);
+        w->sendWindowSize(true);
     }
 }