fix(dogstatsd-replay): set dogstatsd_socket in e2e test; update BUILD.bazel

ADP's replay CLI reads dogstatsd_socket from config to find the UDS path.
The setting has no default so add it explicitly in the e2e test config.

Also add //pkg/util/defaultpaths to both BUILD.bazel files, which was
missing after the previous commit (caught by bazel:run-gazelle).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: jszwedko

cmd/agent/subcommands/dogstatsdcapture/BUILD.bazel

@@ -17,6 +17,7 @@ go_library(
         "//comp/core/log/def",
         "//pkg/config/setup",
         "//pkg/proto/pbgo/core",
+        "//pkg/util/defaultpaths",
         "//pkg/util/fxutil",
         "@com_github_spf13_cobra//:cobra",
         "@org_golang_google_grpc//:grpc",

cmd/agent/subcommands/dogstatsdreplay/BUILD.bazel

@@ -18,6 +18,7 @@ go_library(
         "//comp/dogstatsd/replay/impl",
         "//pkg/config/setup",
         "//pkg/proto/pbgo/core",
+        "//pkg/util/defaultpaths",
         "//pkg/util/fxutil",
         "@com_github_spf13_cobra//:cobra",
         "@org_golang_google_grpc//:grpc",

test/new-e2e/tests/agent-subcommands/dogstatsdreplay_nix_test.go

@@ -30,6 +30,7 @@ log_level: DEBUG
 dogstatsd_non_local_traffic: true
 dogstatsd_tag_cardinality: high
 dogstatsd_origin_detection: true
+dogstatsd_socket: /var/run/datadog/dsd.socket
 `),
 				),
 			),