build: disable sourcemap generation for all sass binaries (#17291)

We need to disable sourcemap generation for all sass binaries
as otherwise the inline source map comment will be inlined into
component `styles` in the release output.

Technically this is not a big deal for AOT compilation where those
source-map strings are omitted anyway, but for JIT it will contribute in
payload size, and with the current state of Angular Package Format, these
source-maps would point to non-existent files anyway.

We should just not generate these sourcemaps/comments similarly
to our Gulp release output.

Author: devversion

src/cdk-experimental/dialog/BUILD.bazel

@@ -1,7 +1,6 @@
 package(default_visibility = ["//visibility:public"])
 
-load("@io_bazel_rules_sass//:defs.bzl", "sass_binary")
-load("//tools:defaults.bzl", "ng_module", "ng_test_library", "ng_web_test_suite")
+load("//tools:defaults.bzl", "ng_module", "ng_test_library", "ng_web_test_suite", "sass_binary")
 
 ng_module(
     name = "dialog",

src/cdk/BUILD.bazel

@@ -26,10 +26,6 @@ rerootedStyles = [file for target in CDK_ENTRYPOINTS_WITH_STYLES for file in [
         "%s-prebuilt.css" % target,
         target,
     ],
-    [
-        "%s-prebuilt.css.map" % target,
-        target,
-    ],
 ]]
 
 # Create genrules which re-root stylesheets from secondary entry-points.

src/cdk/a11y/BUILD.bazel

@@ -1,12 +1,13 @@
 package(default_visibility = ["//visibility:public"])
 
-load("@io_bazel_rules_sass//:defs.bzl", "sass_binary", "sass_library")
 load(
     "//tools:defaults.bzl",
     "markdown_to_html",
     "ng_module",
     "ng_test_library",
     "ng_web_test_suite",
+    "sass_binary",
+    "sass_library",
 )
 
 ng_module(

src/cdk/overlay/BUILD.bazel

@@ -1,6 +1,5 @@
 package(default_visibility = ["//visibility:public"])
 
-load("@io_bazel_rules_sass//:defs.bzl", "sass_binary", "sass_library")
 load("//src/e2e-app:test_suite.bzl", "e2e_test_suite")
 load(
     "//tools:defaults.bzl",
@@ -9,6 +8,8 @@ load(
     "ng_module",
     "ng_test_library",
     "ng_web_test_suite",
+    "sass_binary",
+    "sass_library",
 )
 
 ng_module(

src/cdk/scrolling/BUILD.bazel

@@ -1,12 +1,12 @@
 package(default_visibility = ["//visibility:public"])
 
-load("@io_bazel_rules_sass//:defs.bzl", "sass_binary")
 load(
     "//tools:defaults.bzl",
     "markdown_to_html",
     "ng_module",
     "ng_test_library",
     "ng_web_test_suite",
+    "sass_binary",
 )
 
 ng_module(

src/cdk/text-field/BUILD.bazel

@@ -1,12 +1,13 @@
 package(default_visibility = ["//visibility:public"])
 
-load("@io_bazel_rules_sass//:defs.bzl", "sass_binary", "sass_library")
 load(
     "//tools:defaults.bzl",
     "markdown_to_html",
     "ng_module",
     "ng_test_library",
     "ng_web_test_suite",
+    "sass_binary",
+    "sass_library",
 )
 
 ng_module(

src/dev-app/BUILD.bazel

@@ -1,7 +1,6 @@
 package(default_visibility = ["//visibility:public"])
 
-load("@io_bazel_rules_sass//:defs.bzl", "sass_binary")
-load("//tools:defaults.bzl", "ng_module")
+load("//tools:defaults.bzl", "ng_module", "sass_binary")
 load("//tools/dev-server:index.bzl", "dev_server")
 
 ng_module(

src/dev-app/autocomplete/BUILD.bazel

@@ -1,7 +1,6 @@
 package(default_visibility = ["//visibility:public"])
 
-load("@io_bazel_rules_sass//:defs.bzl", "sass_binary")
-load("//tools:defaults.bzl", "ng_module")
+load("//tools:defaults.bzl", "ng_module", "sass_binary")
 
 ng_module(
     name = "autocomplete",

src/dev-app/badge/BUILD.bazel

@@ -1,7 +1,6 @@
 package(default_visibility = ["//visibility:public"])
 
-load("@io_bazel_rules_sass//:defs.bzl", "sass_binary")
-load("//tools:defaults.bzl", "ng_module")
+load("//tools:defaults.bzl", "ng_module", "sass_binary")
 
 ng_module(
     name = "badge",

src/dev-app/baseline/BUILD.bazel

@@ -1,7 +1,6 @@
 package(default_visibility = ["//visibility:public"])
 
-load("@io_bazel_rules_sass//:defs.bzl", "sass_binary")
-load("//tools:defaults.bzl", "ng_module")
+load("//tools:defaults.bzl", "ng_module", "sass_binary")
 
 ng_module(
     name = "baseline",