build: increase Bazel shard counts for slow integration test targets

Increase Bazel test shard counts for slow integration test targets to improve CI execution times:
- //packages/angular/build:unit-test_integration_tests: 5 -> 10
- //packages/angular/build:library_integration_tests: 4 -> 6
- //packages/angular_devkit/build_angular:build_angular_dev-server_test: 10 -> 12
- //packages/angular_devkit/build_angular:build_angular_karma_test: 6 -> 10
- //packages/angular_devkit/build_angular:build_angular_server_test: 2 -> 6
- //packages/angular_devkit/build_angular:build_angular_browser_test: 10 -> 20
- //packages/angular_devkit/build_angular:build_angular_prerender_test: 2 -> 4

Author: alan-agius4

packages/angular/build/BUILD.bazel

@@ -354,14 +354,14 @@ jasmine_test(
     name = "unit-test_integration_tests",
     size = "medium",
     data = [":unit-test_integration_test_lib"],
-    shard_count = 5,
+    shard_count = 10,
 )
 
 jasmine_test(
     name = "library_integration_tests",
     size = "medium",
     data = [":library_integration_test_lib"],
-    shard_count = 4,
+    shard_count = 6,
 )
 
 genrule(

packages/angular_devkit/build_angular/BUILD.bazel

@@ -281,7 +281,7 @@ ts_project(
 LARGE_SPECS = {
     "app-shell": {},
     "dev-server": {
-        "shards": 10,
+        "shards": 12,
         "size": "large",
         "flaky": True,
         "extra_deps": [
@@ -294,7 +294,7 @@ LARGE_SPECS = {
     },
     "extract-i18n": {},
     "karma": {
-        "shards": 6,
+        "shards": 10,
         "size": "large",
         "flaky": True,
         "extra_deps": [
@@ -309,6 +309,7 @@ LARGE_SPECS = {
         ],
     },
     "server": {
+        "shards": 6,
         "size": "large",
         "extra_deps": [
             "//:node_modules/@angular/animations",
@@ -317,7 +318,7 @@ LARGE_SPECS = {
     "ng-packagr": {
     },
     "browser": {
-        "shards": 10,
+        "shards": 20,
         "size": "large",
         "flaky": True,
         "extra_deps": [
@@ -327,7 +328,9 @@ LARGE_SPECS = {
             "//:node_modules/ajv",
         ],
     },
-    "prerender": {},
+    "prerender": {
+        "shards": 4,
+    },
     "browser-esbuild": {},
     "ssr-dev-server": {
         "extra_deps": [