fix: Revert "fix: Do not publish the protos to npm" (#8096)

## Description

Before we merge this PR, let's make sure fewer files are generated.

## Impact

Reverses a change that excludes too many files, some of which may be necessary for the client library.

Author: danieljbruce

packages/google-ads-admanager/package.json

@@ -11,7 +11,8 @@
   "author": "Google LLC",
   "main": "build/src/index.js",
   "files": [
-    "build/src"
+    "build/src",
+    "build/protos"
   ],
   "homepage": "https://github.com/googleapis/google-cloud-node/tree/main/packages/google-ads-admanager",
   "keywords": [

packages/google-ads-datamanager/package.json

@@ -11,7 +11,8 @@
   "author": "Google LLC",
   "main": "build/src/index.js",
   "files": [
-    "build/src"
+    "build/src",
+    "build/protos"
   ],
   "homepage": "https://github.com/googleapis/google-cloud-node/tree/main/packages/google-ads-datamanager",
   "keywords": [

packages/google-ai-generativelanguage/package.json

@@ -11,7 +11,8 @@
   "author": "Google LLC",
   "main": "build/src/index.js",
   "files": [
-    "build/src"
+    "build/src",
+    "build/protos"
   ],
   "homepage": "https://github.com/googleapis/google-cloud-node/tree/main/packages/google-ai-generativelanguage",
   "keywords": [

packages/google-analytics-admin/package.json

@@ -12,6 +12,7 @@
   "main": "build/src/index.js",
   "files": [
     "build/src",
+    "build/protos",
     "!build/src/**/*.map"
   ],
   "keywords": [

packages/google-analytics-data/package.json

@@ -12,6 +12,7 @@
   "main": "build/src/index.js",
   "files": [
     "build/src",
+    "build/protos",
     "!build/src/**/*.map"
   ],
   "keywords": [

packages/google-api-apikeys/package.json

@@ -13,6 +13,7 @@
   "main": "build/src/index.js",
   "files": [
     "build/src",
+    "build/protos",
     "!build/src/**/*.map"
   ],
   "keywords": [

packages/google-api-cloudquotas/package.json

@@ -11,7 +11,8 @@
   "author": "Google LLC",
   "main": "build/src/index.js",
   "files": [
-    "build/src"
+    "build/src",
+    "build/protos"
   ],
   "homepage": "https://github.com/googleapis/google-cloud-node/tree/main/packages/google-api-cloudquotas",
   "keywords": [

packages/google-api-servicecontrol/package.json

@@ -12,6 +12,7 @@
   "main": "build/src/index.js",
   "files": [
     "build/src",
+    "build/protos",
     "!build/src/**/*.map"
   ],
   "keywords": [

packages/google-api-servicemanagement/package.json

@@ -12,6 +12,7 @@
   "main": "build/src/index.js",
   "files": [
     "build/src",
+    "build/protos",
     "!build/src/**/*.map"
   ],
   "keywords": [

packages/google-api-serviceusage/package.json

@@ -12,6 +12,7 @@
   "main": "build/src/index.js",
   "files": [
     "build/src",
+    "build/protos",
     "!build/src/**/*.map"
   ],
   "keywords": [