Reduce path length of Roslyn ServiceHub Services folder (#79460)

I've been hitting lots of gold bars in VS indicating various Roslyn features are unavailable when running when F5'ing the roslyn project. I finally spent some time digging into why this happens on my machine, and it turns out that out service hub service paths are just a bit too long. This PR just reduces that path length by 14 characters, which is enough for all the services to be under the 260 character long path limit.

Author: ToddGrun

src/VisualStudio/Setup.ServiceHub/arm64/source.extension.vsixmanifest

@@ -2,8 +2,8 @@
 <PackageManifest Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vsx-schema/2011" xmlns:d="http://schemas.microsoft.com/developer/vsx-schema-design/2011">
   <Metadata>
     <Identity Id="35B9F49B-CC6A-4102-923E-2A41C179BF1F" Version="|%CurrentProject%;GetVsixVersion|" Language="en-US" Publisher="Microsoft" />
-    <DisplayName>Roslyn Services for .NET ServiceHub Host (arm64)</DisplayName>
-    <Description xml:space="preserve">Roslyn Services for .NET ServiceHub Host</Description>
+    <DisplayName>Roslyn ServiceHub Services (arm64)</DisplayName>
+    <Description xml:space="preserve">Roslyn ServiceHub Services</Description>
     <PackageId>Microsoft.CodeAnalysis.VisualStudio.ServiceHub.Setup.arm64</PackageId>
     <License>EULA.rtf</License>
     <AllowClientRole>true</AllowClientRole>

src/VisualStudio/Setup.ServiceHub/x64/source.extension.vsixmanifest

@@ -2,8 +2,8 @@
 <PackageManifest Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vsx-schema/2011" xmlns:d="http://schemas.microsoft.com/developer/vsx-schema-design/2011">
   <Metadata>
     <Identity Id="77E1B4B1-51C4-4B24-9CA2-3CFAC4943DFF" Version="|%CurrentProject%;GetVsixVersion|" Language="en-US" Publisher="Microsoft" />
-    <DisplayName>Roslyn Services for .NET ServiceHub Host</DisplayName>
-    <Description xml:space="preserve">Roslyn Services for .NET ServiceHub Host</Description>
+    <DisplayName>Roslyn ServiceHub Services</DisplayName>
+    <Description xml:space="preserve">Roslyn ServiceHub Services</Description>
     <PackageId>Microsoft.CodeAnalysis.VisualStudio.ServiceHub.Setup.x64</PackageId>
     <License>EULA.rtf</License>
     <AllowClientRole>true</AllowClientRole>