[OpenAI] Bundle using rollup v3 (#27258)

### Packages impacted by this PR
@azure/openai

### Issues associated with this PR
Fixes #27227
Fixes #27226

### Describe the problem that is addressed by this PR
`@azure/openai` depends on v4 of `formdata-node` and v1.7.2 of
`form-data-encoder`. However, those are outdated versions and we should
depend on recent versions of those libraries instead but the recent
versions are ESM-only. I couldn't find a way to bundle ESM code into cjs
using rollup v2, our current rollup version. With rollup v3, you can
bundle ESM-only code if you import it with dynamic imports and this PR
does exactly that.

### What are the possible designs available to address the problem? If
there are more than one possible design, why was the one in this PR
chosen?
N/A

### Are there test cases added in this PR? _(If not, why?)_
N/A

### Provide a list of related PRs _(if any)_
N/A

### Command used to generate this PR:**_(Applicable only to SDK release
request PRs)_

### Checklists
- [x] Added impacted package name to the issue description
- [ ] Does this PR needs any fixes in the SDK Generator?** _(If so,
create an Issue in the
[Autorest/typescript](https://github.com/Azure/autorest.typescript)
repository and link it here)_
- [ ] Added a changelog (if necessary)

sdk/openai/openai/package.json

@@ -44,8 +44,9 @@
     "build:samples": "echo Obsolete",
     "generate": "pwsh ../../../eng/common/scripts/TypeSpec-Project-Sync.ps1 . && pwsh ../../../eng/common/scripts/TypeSpec-Project-Generate.ps1 .",
     "customize": "rimraf src && dev-tool customization apply -s sources/generated/src && npm run format",
-    "build": "npm run clean && tsc -p . && dev-tool run bundle && api-extractor run --local",
-    "build:test": "tsc -p . && dev-tool run bundle",
+    "bundle": "tsc -p . && rollup -c ./rollup.config.js",
+    "build": "npm run clean && npm run bundle && api-extractor run --local",
+    "build:test": "npm run bundle",
     "check-format": "prettier --list-different --config ../../../.prettierrc.json --ignore-path ../../../.prettierignore \"src/**/*.ts\" \"test/**/*.ts\" \"*.{js,json}\"",
     "clean": "rimraf dist dist-* temp types *.tgz *.log",
     "execute:samples": "dev-tool samples run samples-dev",
@@ -104,8 +105,13 @@
     "@azure/test-utils": "^1.0.0",
     "@azure/core-rest-pipeline": "^1.12.0",
     "@microsoft/api-extractor": "^7.31.1",
+    "@rollup/plugin-commonjs": "^25.0.4",
+    "@rollup/plugin-json": "^6.0.0",
+    "@rollup/plugin-multi-entry": "^6.0.0",
+    "@rollup/plugin-node-resolve": "^15.2.1",
     "@types/mocha": "^10.0.0",
     "@types/node": "^14.0.0",
+    "builtin-modules": "^3.3.0",
     "cross-env": "^7.0.3",
     "dotenv": "^16.0.0",
     "eslint": "^8.16.0",
@@ -128,6 +134,7 @@
     "prettier": "^2.5.1",
     "puppeteer": "^19.2.2",
     "rimraf": "^3.0.2",
+    "rollup": "^3.29.3",
     "ts-node": "^10.0.0",
     "typescript": "~5.0.0"
   },
@@ -138,8 +145,8 @@
     "@azure/core-lro": "^2.5.3",
     "@azure/core-rest-pipeline": "^1.10.2",
     "@azure/logger": "^1.0.3",
-    "formdata-node": "^4.0.0",
-    "form-data-encoder": "1.7.2",
+    "formdata-node": "^5.0.0",
+    "form-data-encoder": "^3.0.0",
     "tslib": "^2.4.0"
   },
   "//sampleConfiguration": {