Let 'mozc_renderer' run under Per Monitor DPI V2 mode

This is part of our on-going effort to make Mozc binaries comply with
Per Monitor DPI V2 protocol in Windows (google#831).

With this commit, 'mozc_renderer' process starts running under
Per Monitor DPI V2 mode, and Qt 6.6 also correctly recognizes it at run
time [1].

 [1]: qt/qtbase@5e0d9a0

PiperOrigin-RevId: 575708085

src/gui/tool/mozc_tool.exe.manifest

@@ -24,6 +24,9 @@
   <asmv3:application xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
     <asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
       <dpiAware>true</dpiAware>
+      <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">
+        PerMonitorV2
+      </dpiAwareness>
     </asmv3:windowsSettings>
   </asmv3:application>
 </assembly>