roll: pigweed pw_toolchain: Add migration shim for legacy GCC toolchain rules

Original-Bug: b/346388161
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/247872
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Original-Revision: dea7775e165fcd6c03143b3b2000cd5c69493643

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: e4fe3eb3c811aa..dea7775e165fcd
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8731543384670399617
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I9d3c6d7685808af93c0e6f4bfff8e2a2bc9ae2ec
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/showcase/sense/+/248074
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/MODULE.bazel b/MODULE.bazel
index a9fb075..c73d363 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -49,8 +49,8 @@
     module_name = "pigweed",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-11-11.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8731554245944366081.
-    commit = "e4fe3eb3c811aaca1ce97ebe298340864bc01c9f",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8731543384670399617.
+    commit = "dea7775e165fcd6c03143b3b2000cd5c69493643",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed",
 )
 
@@ -58,8 +58,8 @@
     module_name = "pw_toolchain",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-11-11.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8731554245944366081.
-    commit = "e4fe3eb3c811aaca1ce97ebe298340864bc01c9f",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8731543384670399617.
+    commit = "dea7775e165fcd6c03143b3b2000cd5c69493643",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed",
     strip_prefix = "pw_toolchain_bazel",
 )