features: Fixes bug on implies attr on feature

Fixes a bug where the implied attribute was not being expanding
properly.

cc_toolchain/features/features.bzl

diff --git a/cc_toolchain/features/features.bzl b/cc_toolchain/features/features.bzl
index 9f9d0ce..bd4e983 100644
--- a/cc_toolchain/features/features.bzl
+++ b/cc_toolchain/features/features.bzl
@@ -63,7 +63,7 @@
             name = ctx.label.name,
             enabled = ctx.attr.enabled,
             provides = ctx.attr.provides,
-            implies = [label.name for label in ctx.attr.implies],
+            implies = [target.label.name for target in ctx.attr.implies],
             flag_sets = flag_sets,
         ),
     ]
@@ -176,6 +176,15 @@
                 ),
             ],
         ))
+    if injected_include_flags:
+        flag_sets.append(flag_set(
+            actions = ALL_CC_COMPILE_ACTION_NAMES,
+            flag_groups = [
+                flag_group(
+                    flags = injected_include_flags,
+                ),
+            ],
+        ))
 
     if linker_dir_flags or linker_flags or linker_runtime_path_flags:
         flag_sets.append(flag_set(