test(ivy): ngcc - improve and use the MockLogger (#29740)

Previously the console logger was being used in integration tests
leading to lots of output during test runs.

PR Close #29740

packages/compiler-cli/ngcc/test/helpers/BUILD.bazel

@@ -0,0 +1,16 @@
+load("//tools:defaults.bzl", "ts_library")
+
+package(default_visibility = ["//packages/compiler-cli/ngcc:__subpackages__"])
+
+ts_library(
+    name = "helpers",
+    testonly = True,
+    srcs = glob([
+        "*.ts",
+    ]),
+    deps = [
+        "//packages/compiler-cli/ngcc",
+        "//packages/compiler-cli/src/ngtsc/path",
+        "//packages/compiler-cli/src/ngtsc/testing",
+    ],
+)