[Bazel] Fix broken build rules or mark them manual (#9913)

* Fix filename for unittest_gen_import.proto.

* Add 'manual' tags to jvm_export rules so they aren't selected by wildcard

* Run buildifier
diff --git a/java/core/BUILD.bazel b/java/core/BUILD.bazel
index 60be807..e36a38e 100644
--- a/java/core/BUILD.bazel
+++ b/java/core/BUILD.bazel
@@ -121,6 +121,7 @@
     resources = [
         "//:lite_well_known_protos",
     ],
+    tags = ["manual"],
     runtime_deps = [":lite"],
 )
 
@@ -156,6 +157,7 @@
     resources = [
         "//:well_known_protos",
     ],
+    tags = ["manual"],
     runtime_deps = [":core"],
 )