fix(windows-installer): ignore FilesInUse/Restart dialogue (#823)

Issue #, if available:
- When upgrading Finch, if the VM is still running, an important looking
screen mentioning "Files in use" will pop up, and prompt the user to
have Finch try to delete these files, or ignore them. The default
behavior of these options doesn't actually do anything in our case.
Luckily, stopping Finch's VM and making sure its removed (which is done
in the uninstall script) should take care of this for us instead. This
change just removes the extra unnecessary step for users since it may be
confusing.

*Description of changes:*
- Suppress the "Files in use" dialogue since it's confusing and not
useful

*Testing done:*
- Simulated upgrades and uninstalls on my test machine



- [x] I've reviewed the guidance in CONTRIBUTING.md


#### License Acceptance

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.

Signed-off-by: Justin Alvarez <[email protected]>

msi-builder/FinchMSITemplate.wxs

@@ -12,6 +12,8 @@
     <Feature Id="ProductFeature" Title="Finch" Level="1">
       <ComponentGroupRef Id="FinchComponents" />
     </Feature>
+    <!-- Disable FilesInUse/Restart dialogue -->
+    <Property Id="MSIRESTARTMANAGERCONTROL" Value="Disable" />
     <Directory Id="TARGETDIR" Name="SourceDir">
       <Directory Id="ProgramFiles64Folder">
         <Directory Id="INSTALLFOLDER" Name="Finch">