Enable LTO for Fuchsia artifact builds (#18481)

diff --git a/tools/fuchsia/build_fuchsia_artifacts.py b/tools/fuchsia/build_fuchsia_artifacts.py
index f942162..2922b40 100755
--- a/tools/fuchsia/build_fuchsia_artifacts.py
+++ b/tools/fuchsia/build_fuchsia_artifacts.py
@@ -232,10 +232,8 @@
       runtime_mode,
   ]
 
-  # Always disable lto until https://github.com/flutter/flutter/issues/44841
-  # gets fixed.
-  # if not enable_lto:
-  flags.append('--no-lto')
+  if not enable_lto:
+    flags.append('--no-lto')
 
   RunGN(out_dir, flags)
   BuildNinjaTargets(out_dir, GetTargetsToBuild(product))