[gnome-builder] libide-foundry: add missing property setter

[Christian Hergert <chergert src gnome org>]

commit 27eb415dd5dcc988951635db87872ac4b1435704
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jul 11 21:13:19 2022 -0700

    libide-foundry: add missing property setter

 src/libide/foundry/ide-config.c | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/libide/foundry/ide-config.c b/src/libide/foundry/ide-config.c
index ae4805ea2..33ba9db83 100644
--- a/src/libide/foundry/ide-config.c
+++ b/src/libide/foundry/ide-config.c
@@ -478,6 +478,10 @@ ide_config_set_property (GObject      *object,
       ide_config_set_prefix (self, g_value_get_string (value));
       break;
 
+    case PROP_PREFIX_SET:
+      ide_config_set_prefix_set (self, g_value_get_boolean (value));
+      break;
+
     case PROP_PARALLELISM:
       ide_config_set_parallelism (self, g_value_get_int (value));
       break;