Projucer: Disable hardened runtime for LV2 and VST3 helpers

Enabling the hardened runtime also enables library validation, which
means that the manifest generator may not be able to load the built
plugin if the generator runs before the signing step.

The manifest generator tools should not be distributed/archived, so
disabling the hardened runtime for these targets is appropriate.

extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_Xcode.h

@@ -1319,6 +1319,11 @@ class XcodeProjectExporter  : public ProjectExporter
             owner.addObject (v);
         }
 
+        bool shouldUseHardenedRuntime() const
+        {
+            return type != VST3Helper && type != LV2Helper && owner.isHardenedRuntimeEnabled();
+        }
+
         //==============================================================================
         String getTargetAttributes() const
         {
@@ -1341,7 +1346,7 @@ class XcodeProjectExporter  : public ProjectExporter
                                                                   || owner.getProject().isAUPluginHost());
             capabilities["Push"]                  = owner.isPushNotificationsEnabled();
             capabilities["Sandbox"]               = type == Target::AudioUnitv3PlugIn || owner.isAppSandboxEnabled();
-            capabilities["HardenedRuntime"]       = owner.isHardenedRuntimeEnabled();
+            capabilities["HardenedRuntime"]       = shouldUseHardenedRuntime();
 
             if (owner.iOS && owner.isiCloudPermissionsEnabled())
                 capabilities["com.apple.iCloud"] = true;
@@ -1397,7 +1402,7 @@ class XcodeProjectExporter  : public ProjectExporter
             if (owner.isPushNotificationsEnabled()
              || owner.isAppGroupsEnabled()
              || owner.isAppSandboxEnabled()
-             || owner.isHardenedRuntimeEnabled()
+             || shouldUseHardenedRuntime()
              || owner.isNetworkingMulticastEnabled()
              || (owner.isiOS() && owner.isiCloudPermissionsEnabled())
              || (owner.isiOS() && owner.getProject().isAUPluginHost()))
@@ -1687,7 +1692,7 @@ class XcodeProjectExporter  : public ProjectExporter
 
             s.set ("CONFIGURATION_BUILD_DIR", addQuotesIfRequired (adjustedConfigBuildDir));
 
-            if (owner.isHardenedRuntimeEnabled())
+            if (shouldUseHardenedRuntime())
                 s.set ("ENABLE_HARDENED_RUNTIME", "YES");
 
             String gccVersion ("com.apple.compilers.llvm.clang.1_0");