Do not emit ThisAssembly.Git.IsDirty when GitThisAssembly is false

We missed checking this in the source-generator.

Fixes #337

Author: kzu

src/Analyzer/GitInfoGenerator.cs

@@ -11,7 +11,9 @@ public void Initialize(IncrementalGeneratorInitializationContext context)
                 Namespace = c.GlobalOptions.TryGetValue("build_property.ThisAssemblyNamespace", out var ns)
                     && !string.IsNullOrEmpty(ns) ? ns : null,
                 IsDirty = c.GlobalOptions.TryGetValue("build_property.GitIsDirty", out var dirty)
-                    && dirty == "1" ? true : false
+                    && dirty == "1" ? true : false,
+                NoThisAssembly = c.GlobalOptions.TryGetValue("build_property.GitThisAssembly", out var value)
+                    && bool.TryParse(value, out var thisassembly) && !thisassembly ? true : false
             });
 
         context.RegisterSourceOutput(ns,
@@ -21,6 +23,9 @@ public void Initialize(IncrementalGeneratorInitializationContext context)
                 if (!string.IsNullOrEmpty(state.Namespace))
                     return;
 
+                if (state.NoThisAssembly)
+                    return;
+
                 c.AddSource("ThisAssembly.Git.IsDirty.g",
                     $$"""
                     //------------------------------------------------------------------------------

src/GitInfo/build/GitInfo.ThisAssembly.targets

@@ -33,12 +33,15 @@
     </GitThisAssemblyDependsOn>
   </PropertyGroup>
 
+  <ItemGroup>
+    <CompilerVisibleProperty Include="GitIsDirty" />
+    <CompilerVisibleProperty Include="GitThisAssembly" />
+  </ItemGroup>
+
   <Target Name="GitThisAssembly" DependsOnTargets="$(GitThisAssemblyDependsOn)"
 			    BeforeTargets="PrepareConstants;GenerateMSBuildEditorConfigFileShouldRun" Condition="'$(GitThisAssembly)' == 'true'">
 
     <ItemGroup>
-      <CompilerVisibleProperty Include="GitIsDirty" />
-
       <Constant Include="IsDirtyString" Value="true" Root="Git" Condition="$(GitIsDirty) == '1'" />
       <Constant Include="IsDirtyString" Value="false" Root="Git" Condition="$(GitIsDirty) == '0'" />