add annotations for stencil 2d graph (chapel-lang#25992)

This adds the following annotations to the stencil 2d graph (would be
nice to put in release notes):

- chapel-lang#25712 went in on 8/13 which
caused the StencilDist line to meet the StencilDist_localAccess line
- chapel-lang#25701 went in on 8/19 which
improved the performance of both StencilDist versions
- chapel-lang#25933 when in on 9/11,
fixing the slight performance regression in the BlockDist version

[reviewed-by: nobody; annotations update]

test/ANNOTATIONS.yaml

@@ -1005,8 +1005,14 @@ ft-a:
 heat_2d_dist.ml-time:
   08/31/23:
     - Optimize swap operation for Cyclic and Stencil distributions (#23019)
+  08/13/24:
+    - Expand auto local access optimization to support basic offsets (#25712)
+  08/19/24:
+    - Stencil Distribution performance improvments (#25701)
   09/04/24:
     - Extend array view elision to Block, Cyclic and Stencil (#25869)
+  09/11/24:
+    - Prevent offset access with block arrays to thwart dynamic ALA (#25933)
 
 hpl:
   12/11/15: