Update Darwin availability annotations for Joint Fabric. (#39098)

diff --git a/src/darwin/Framework/CHIP/templates/availability.yaml b/src/darwin/Framework/CHIP/templates/availability.yaml
index 83733a1..55ea058 100644
--- a/src/darwin/Framework/CHIP/templates/availability.yaml
+++ b/src/darwin/Framework/CHIP/templates/availability.yaml
@@ -11630,6 +11630,9 @@
           - MeterIdentification
           - SoilMeasurement
           - TLSClientManagement
+          # In-progress for Joint Fabric feature
+          - JointFabricDatastore
+          - JointFabricAdministrator
       attributes:
           BasicInformation:
               # In-progress for maybe Matter 1.5
@@ -11726,3 +11729,5 @@
           - MountedDimmableLoadControl
           - MountedOnOffControl
           - ThermostatController
+          # In-progress for Joint Fabric feature
+          - JointFabricAdministrator