Revert "Revert "mixed builds correctly reference stubs libs""

This reverts commit 1db4348734.

Changes from original:
  - extracted function to add the current version to stub
    versions for bp2build.
  - added libc++ to mixed builds denylist

Reason for revert: re-uploading with fix in topic

Change-Id: Ifa0ed456bf8cb4a7f861d6826263adfedb4fdd9c

bazel/cquery/request_type.go

@@ -149,6 +149,7 @@ sharedLibraries = []
 rootSharedLibraries = []
 
 shared_info_tag = "//build/bazel/rules/cc:cc_library_shared.bzl%CcSharedLibraryOutputInfo"
+stubs_tag = "//build/bazel/rules/cc:cc_stub_library.bzl%CcStubInfo"
 unstripped_tag = "//build/bazel/rules/cc:stripped_cc_common.bzl%CcUnstrippedInfo"
 unstripped = ""
 
@@ -160,6 +161,8 @@ if shared_info_tag in p:
   unstripped = path
   if unstripped_tag in p:
     unstripped = p[unstripped_tag].unstripped.path
+elif stubs_tag in p:
+  rootSharedLibraries.extend([f.path for f in target.files.to_list()])
 else:
   for linker_input in linker_inputs:
     for library in linker_input.libraries: