Fix the build in VS 2019 16.7 (#6838)

The main change in 16.7 is the separation of `AppContainerApplication`
into `WindowsStoreApp` and `WindowsAppContainer`. There's been a bit of
interest in splitting packaging away from containment, and this is the
first step in that direction.

We're a somewhat unique application, but as WinUI3 becomes more
prevalent we will become _less_ unique.

Some of these things, I've looked at and wondered how they ever worked.

## PR Checklist
* [x] Closes nothing

## Validation Steps Performed
Built locally and in CI. Tested the generated package with the package tester. Built on 16.6 and seen that it still seems to work.

src/cascadia/LocalTests_TerminalApp/TestHostApp/TestHostApp.vcxproj

@@ -6,6 +6,7 @@
     <DefaultLanguage>en-US</DefaultLanguage>
     <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>
     <AppContainerApplication>true</AppContainerApplication>
+    <WindowsStoreApp>true</WindowsStoreApp>
     <ApplicationType>Windows Store</ApplicationType>
     <WindowsTargetPlatformMinVersion>10.0.18362.0</WindowsTargetPlatformMinVersion>
     <WindowsTargetPlatformVersion>10.0.18362.0</WindowsTargetPlatformVersion>

src/cascadia/TerminalAzBridge/TerminalAzBridge.vcxproj

@@ -16,15 +16,6 @@
   <Import Project="..\..\..\common.openconsole.props" Condition="'$(OpenConsoleDir)'==''" />
   <Import Project="$(OpenConsoleDir)src\cppwinrt.build.pre.props" />
 
-  <ItemDefinitionGroup>
-    <ClCompile>
-      <SDLCheck>true</SDLCheck>
-    </ClCompile>
-    <Link>
-      <SubSystem>Console</SubSystem>
-    </Link>
-  </ItemDefinitionGroup>
-
   <PropertyGroup>
     <GenerateManifest>true</GenerateManifest>
     <EmbedManifest>true</EmbedManifest>
@@ -67,5 +58,15 @@
 
   <Import Project="$(OpenConsoleDir)src\cppwinrt.build.post.props" />
 
+  <!-- These have to come after post.props because the Cpp common targets will inexplicably overwrite them. -->
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+    </Link>
+  </ItemDefinitionGroup>
+
   <Import Project="$(OpenConsoleDir)\build\rules\GenerateSxsManifestsFromWinmds.targets" />
 </Project>

src/cascadia/WindowsTerminal/WindowsTerminal.vcxproj

@@ -11,6 +11,8 @@
     <ConfigurationType>Application</ConfigurationType>
     <OpenConsoleUniversalApp>false</OpenConsoleUniversalApp>
     <ApplicationType>Windows Store</ApplicationType>
+    <WindowsStoreApp>true</WindowsStoreApp>
+    <WindowsAppContainer>false</WindowsAppContainer>
     <!-- IMPORTANT! Xaml Islands only works on >= 17709 -->
     <!-- IMPORTANT! cppwinrt.pre.props specifies 17134 -->
     <WindowsTargetPlatformVersion>10.0.18362.0</WindowsTargetPlatformVersion>

src/cascadia/WindowsTerminalUniversal/WindowsTerminalUniversal.vcxproj

@@ -13,6 +13,7 @@
     <DefaultLanguage>en-US</DefaultLanguage>
     <MinimumVisualStudioVersion>15.0</MinimumVisualStudioVersion>
     <AppContainerApplication>true</AppContainerApplication>
+    <WindowsStoreApp>true</WindowsStoreApp>
     <ApplicationType>Windows Store</ApplicationType>
     <ApplicationTypeRevision>10.0</ApplicationTypeRevision>
     <WindowsTargetPlatformVersion Condition=" '$(WindowsTargetPlatformVersion)' == '' ">10.0.18362.0</WindowsTargetPlatformVersion>

src/cppwinrt.build.pre.props

@@ -25,6 +25,7 @@
   <PropertyGroup Condition="'$(OpenConsoleUniversalApp)'!='false'">
     <MinimalCoreWin>true</MinimalCoreWin>
     <AppContainerApplication>true</AppContainerApplication>
+    <WindowsStoreApp>true</WindowsStoreApp>
     <ApplicationType>Windows Store</ApplicationType>
   </PropertyGroup>