api, context: fix bazel build: export api from context and remove context dep from api (#10326)

api/BUILD.bazel

@@ -7,12 +7,10 @@ java_library(
     javacopts = ["-Xep:DoNotCall:OFF"],  # Remove once requiring Bazel 3.4.0+; allows non-final
     visibility = ["//visibility:public"],
     deps = [
-        "//context",
         "@com_google_code_findbugs_jsr305//jar",
         "@com_google_errorprone_error_prone_annotations//jar",
         "@com_google_guava_failureaccess//jar",  # future transitive dep of Guava. See #5214
         "@com_google_guava_guava//jar",
         "@com_google_j2objc_j2objc_annotations//jar",
     ],
-    exports = ["//context"],
 )

context/BUILD.bazel

@@ -1,4 +1,5 @@
 java_library(
     name = "context",
     visibility = ["//visibility:public"],
+    exports = ["//api"],
 )