Update Darwin availability annotations. (project-chip#31767)

NoFeatures is not in the spec; need to decide whether to expose it.

Author: bzbarsky-apple

src/darwin/Framework/CHIP/templates/availability.yaml

@@ -8662,3 +8662,13 @@
                   - Setpoints
                   - Presets
                   - MatterScheduleConfiguration
+          RVCRunMode:
+              Feature:
+                  # Not really part of the spec, need to think about whether to
+                  # expose this.
+                  - NoFeatures
+          RVCCleanMode:
+              Feature:
+                  # Not really part of the spec, need to think about whether to
+                  # expose this.
+                  - NoFeatures