Fix windows_export_all_symbols in cc_shared_library (bazelbuild#15190)

Author: oquenchil

src/main/starlark/builtins_bzl/common/cc/experimental_cc_shared_library.bzl

@@ -388,10 +388,7 @@ def _cc_shared_library_impl(ctx):
     feature_configuration = cc_common.configure_features(
         ctx = ctx,
         cc_toolchain = cc_toolchain,
-        # This features enables behavior which creates a def file automatically
-        # for exporting all the symbols in a shared libary on Windows. If a
-        # custom def file is passed, this behavior doesn't apply.
-        requested_features = ctx.features + ["windows_export_all_symbols"],
+        requested_features = ctx.features,
         unsupported_features = ctx.disabled_features,
     )
 

src/main/starlark/tests/builtins_bzl/cc/cc_shared_library/test_cc_shared_library/BUILD.builtin_test

@@ -36,18 +36,21 @@ cc_binary(
 cc_shared_library(
     name = "a_so",
     roots = [":a_suffix"],
+    features = ["windows_export_all_symbols"],
 )
 
 cc_shared_library(
     name = "diamond_so",
     dynamic_deps = [":a_so"],
     roots = [":qux"],
+    features = ["windows_export_all_symbols"],
 )
 
 cc_shared_library(
     name = "diamond2_so",
     dynamic_deps = [":a_so"],
     roots = [":qux2"],
+    features = ["windows_export_all_symbols"],
 )
 
 cc_binary(
@@ -90,6 +93,7 @@ cc_shared_library(
         "-Wl,--script=$(location :additional_script.txt)",
       ],
       "//conditions:default": []}),
+    features = ["windows_export_all_symbols"],
 )
 
 cc_library(
@@ -184,6 +188,7 @@ cc_shared_library(
       ],
       "//conditions:default": [],
     }),
+    features = ["windows_export_all_symbols"],
 )
 
 cc_library(
@@ -309,6 +314,7 @@ cc_shared_library(
     roots = [
         ":direct_so_file_cc_lib",
     ],
+    features = ["windows_export_all_symbols"],
 )
 
 genrule(
@@ -330,6 +336,7 @@ cc_shared_library(
         ":direct_so_file_cc_lib2",
     ],
     shared_lib_name = "renamed_so_file.so",
+    features = ["windows_export_all_symbols"],
 )
 
 cc_library(