[beta] Cherry-pick DevTools 2.34.3

The [Cherry-pick] link below is fake. There is no real link yet, because DevTools with fix will release to main at normal schedule.

Bug: https://github.com/dart-lang/sdk/issues/55475
Cherry-pick: https://github.com/flutter/devtools/pull/7597, https://github.com/flutter/devtools/pull/7633
Cherry-pick-request: https://github.com/dart-lang/sdk/issues/55509
Change-Id: I6f9a90f49d4efb3c65147f9132866c7c5432410a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/363642
Commit-Queue: Kevin Chisholm <kevinjchisholm@google.com>
Reviewed-by: Elliott Brooks <elliottbrooks@google.com>
Reviewed-by: Jacob Richman <jacobr@google.com>
diff --git a/DEPS b/DEPS
index 9f1b7e8..859be991 100644
--- a/DEPS
+++ b/DEPS
@@ -102,7 +102,7 @@
   "boringssl_rev": "d24a38200fef19150eef00cad35b138936c08767",
   "browser-compat-data_tag": "ac8cae697014da1ff7124fba33b0b4245cc6cd1b", # v1.0.22
   "cpu_features_rev": "936b9ab5515dead115606559502e3864958f7f6e",
-  "devtools_rev": "8541874805e6e0b495d5d831db7211e12d3f73aa",
+  "devtools_rev": "2884b26b5589d826395b72a6231d43110e8f9865",
   "icu_rev": "81d656878ec611cb0b42d52c82e9dae93920d9ba",
   "jinja2_rev": "2222b31554f03e62600cd7e383376a7c187967a1",
   "libcxx_rev": "44079a4cc04cdeffb9cfe8067bfb3c276fb2bab0",