Migrate xplat autoglob targets (facebook#31400)

Summary:
## Changelog: [Internal]
Pull Request resolved: facebook#31400
Pull Request resolved: facebook#31411

Annotate autolgob mode for apple library targets

Reviewed By: adamjernst

Differential Revision: D27890473

fbshipit-source-id: 75239c6c1871310e1ccd6576569161eb4163a3c1

Author: Adam Cmiel

Libraries/FBLazyVector/BUCK

@@ -2,7 +2,11 @@ load("//tools/build_defs/oss:rn_defs.bzl", "fb_apple_library")
 
 fb_apple_library(
     name = "FBLazyVector",
-    autoglob = True,
+    exported_headers = [
+        "FBLazyVector/FBLazyIterator.h",
+        "FBLazyVector/FBLazyVector.h",
+    ],
+    autoglob = False,
     complete_nullability = True,
     contacts = ["oncall+react_native@xmail.facebook.com"],
     enable_exceptions = False,

Libraries/RCTRequired/BUCK

@@ -2,7 +2,10 @@ load("//tools/build_defs/oss:rn_defs.bzl", "fb_apple_library")
 
 fb_apple_library(
     name = "RCTRequired",
-    autoglob = True,
+    exported_headers = [
+        "RCTRequired/RCTRequired.h",
+    ],
+    autoglob = False,
     complete_nullability = True,
     contacts = ["oncall+react_native@xmail.facebook.com"],
     extension_api_only = True,