Annotate backported qthreads perf fix (#26397)

Annotate backported qthreads perf fix from
#26328

[Not reviewed - trivial]

Author: jabraham17

test/ANNOTATIONS.yaml

@@ -600,6 +600,9 @@ all:
   11/18/24:
     - text: Update system LLVM to 19
       config: chapcs, 16-node-apollo-hdr, 16-node-hpe-cray-ex, 1-node-hpe-cray-ex, 1-node-a100, 1-node-mi250x
+  12/12/24:
+    - text: Backport Fix For Performance Regression in Qthreads 1.21 (#26328)
+      config: chapcs, 16-node-apollo-hdr, 16-node-hpe-cray-ex, 1-node-hpe-cray-ex
 
 # End all