openwrt, windows: Use PartitionAlloc even in Cronet build to remove dependency on glibc

src/build_overrides/partition_alloc.gni

@@ -144,7 +144,7 @@ assert_cpp20_default = true
 
 # Cronet disables PartitionAlloc to reduce its binary size (crbug.com/674570).
 # TODO(crbug.com/384669394): Consider enabling it instead.
-use_partition_alloc_default = !is_cronet_build
+# use_partition_alloc_default = !is_cronet_build
 
 # On Chromecast devices, some system libraries bypass the allocator shim and
 # call free() directly on memory not managed by PartitionAlloc. This flag