Fix a bug where deps were missing for converted proto_library

This is just a partial fix.

Bug: 246997908
Test: Manual build //frameworks/proto_logging/stats:libstats_proto_host_proto
Change-Id: I9e4e62bce22cb68bcd7f917c57f3d1438fcec716
diff --git a/bp2build/cc_library_conversion_test.go b/bp2build/cc_library_conversion_test.go
index ba7af09..12cffc3 100644
--- a/bp2build/cc_library_conversion_test.go
+++ b/bp2build/cc_library_conversion_test.go
@@ -2284,6 +2284,7 @@
 }`,
 		ExpectedBazelTargets: []string{
 			MakeBazelTarget("proto_library", "a_proto", AttrNameToString{
+				"deps": `[":a_fg_proto_bp2build_converted"]`,
 				"srcs": `["a.proto"]`,
 			}), MakeBazelTarget("cc_lite_proto_library", "a_cc_proto_lite", AttrNameToString{
 				"deps": `[
@@ -2298,6 +2299,7 @@
 				"whole_archive_deps": `[":a_cc_proto_lite"]`,
 			}), MakeBazelTargetNoRestrictions("proto_library", "a_fg_proto_bp2build_converted", AttrNameToString{
 				"srcs": `["a_fg.proto"]`,
+				"tags": `["manual"]`,
 			}), MakeBazelTargetNoRestrictions("filegroup", "a_fg_proto", AttrNameToString{
 				"srcs": `["a_fg.proto"]`,
 			}),
@@ -2336,6 +2338,7 @@
 				"whole_archive_deps": `[":a_cc_proto_lite"]`,
 			}), MakeBazelTargetNoRestrictions("proto_library", "a_fg_proto_bp2build_converted", AttrNameToString{
 				"srcs": `["a_fg.proto"]`,
+				"tags": `["manual"]`,
 			}), MakeBazelTargetNoRestrictions("filegroup", "a_fg_proto", AttrNameToString{
 				"srcs": `["a_fg.proto"]`,
 			}),
@@ -2368,6 +2371,7 @@
 }`,
 		ExpectedBazelTargets: []string{
 			MakeBazelTarget("proto_library", "a_proto", AttrNameToString{
+				"deps": `["//path/to/A:a_fg_proto_bp2build_converted"]`,
 				"srcs": `["a.proto"]`,
 			}), MakeBazelTarget("cc_lite_proto_library", "a_cc_proto_lite", AttrNameToString{
 				"deps": `[