fix(docs): Add Next.js Node.js runtime instrumentation guidance (#15771)

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## DESCRIBE YOUR PR

Automatic instrumentation of the OpenAI SDK may not work as expected
with Next.js. This PR adds guidance for users to use manual
instrumentation via `instrumentOpenAiClient` as the recommended
approach.

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## PRE-MERGE CHECKLIST

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- [X] Checked Vercel preview for correctness, including links
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## EXTRA RESOURCES

- [Sentry Docs contributor guide](https://docs.sentry.io/contributing/)

Author: RulaKhaled

docs/platforms/javascript/common/configuration/integrations/openai.mdx

@@ -35,7 +35,7 @@ This integration works in the Node.js, Cloudflare Workers, Vercel Edge Functions
 
 _Import name: `Sentry.openAIIntegration`_
 
-The `openAIIntegration` adds instrumentation for the `openai` API to capture spans by automatically wrapping OpenAI client calls and recording LLM interactions with configurable input/output recording.
+The `openAIIntegration` adds instrumentation for the `openai` API to capture spans by wrapping OpenAI client calls and recording LLM interactions with configurable input/output recording.
 
 <PlatformSection notSupported={["javascript.cloudflare", "javascript.nextjs", "javascript"]}>
 It is enabled by default and will automatically capture spans for OpenAI API method calls. You can opt-in to capture inputs and outputs by setting `recordInputs` and `recordOutputs` in the integration config:
@@ -77,6 +77,28 @@ const response = await client.chat.completions.create({
 
 </PlatformSection>
 
+<PlatformSection supported={["javascript.nextjs"]}>
+For Next.js applications, you need to manually instrument the OpenAI client using the `instrumentOpenAiClient` helper:
+
+```javascript
+import * as Sentry from "@sentry/nextjs";
+import OpenAI from "openai";
+
+const openai = new OpenAI();
+const client = Sentry.instrumentOpenAiClient(openai, {
+  recordInputs: true,
+  recordOutputs: true,
+});
+
+// Use the wrapped client instead of the original openai instance
+const response = await client.chat.completions.create({
+  model: "gpt-4o",
+  messages: [{ role: "user", content: "Hello!" }],
+});
+```
+
+</PlatformSection>
+
 <PlatformSection supported={["javascript"]}>
 For browser applications, you need to manually instrument the OpenAI client using the `instrumentOpenAiClient` helper:
 
@@ -138,31 +160,6 @@ By default this integration adds tracing support to OpenAI API method calls incl
 
 The integration will automatically detect streaming vs non-streaming requests and handle them appropriately.
 
-<PlatformSection supported={['javascript.nextjs']}>
-
-## Edge runtime
-
-This integration is automatically instrumented in the Node.js runtime. For Next.js applications using the Edge runtime, you need to manually instrument the OpenAI client:
-
-```javascript
-import * as Sentry from "@sentry/nextjs";
-import OpenAI from "openai";
-
-const openai = new OpenAI();
-const client = Sentry.instrumentOpenAiClient(openai, {
-  recordInputs: true,
-  recordOutputs: true,
-});
-
-// Use the wrapped client instead of the original openai instance
-const response = await client.chat.completions.create({
-  model: "gpt-4o",
-  messages: [{ role: "user", content: "Hello!" }],
-});
-```
-
-</PlatformSection>
-
 ## Supported Versions
 
-- `openai`: `>=4.0.0 <6`
+- `openai`: `>=4.0.0 <7`