Let litert_shared_library be visible from other repos.

Currently there is no known way to let a package group "litert_public" define visibility that can let the target be visible from another repository. Only direct definition of "visibility = ["//visibility:public"]" works.
This is a temp solution since for now only this library is related. Should discuss about further solutions later if necessary.

LiteRT-PiperOrigin-RevId: 767292232

Author: aaronndx

litert/cc/BUILD

@@ -419,7 +419,11 @@ cc_library(
     srcs = ["litert_shared_library.cc"],
     hdrs = ["litert_shared_library.h"],
     visibility = [
-        "//litert:litert_public",
+        # copybara:uncomment_begin(oss)
+        # "//litert:litert_public",
+        # copybara:uncomment_end_and_comment_begin
+        "//visibility:public",
+        # copybara:comment_end
     ],
     deps = [
         ":litert_expected",