chore: update sdk meta (#1198)

This PR will remove `combined-browser` from sdk meta and rename
`browser` sdk to `JavaScript Client SDK` to align with the old naming

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Low risk metadata-only change, but may affect any tooling or docs
generation that expects the `combined-browser` SDK key or the previous
`browser` display name.
> 
> **Overview**
> Updates `.sdk_metadata.json` to rename the `browser` SDK display name
from **JavaScript Browser SDK** to **JavaScript Client SDK**.
> 
> Removes the `combined-browser` SDK entry from the metadata,
eliminating its release/tag and feature declarations from the published
SDK catalog.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
16e6cdc. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

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Author: joker23

.sdk_metadata.json

@@ -38,7 +38,7 @@
       }
     },
     "browser": {
-      "name": "JavaScript Browser SDK",
+      "name": "JavaScript Client SDK",
       "type": "client-side",
       "path": "packages/sdk/browser",
       "languages": ["JavaScript", "TypeScript"],
@@ -83,34 +83,6 @@
         "track": { "introduced": "2.3" }
       }
     },
-    "combined-browser": {
-      "name": "Combined JavaScript Browser SDK",
-      "type": "client-side",
-      "path": "packages/sdk/combined-browser",
-      "languages": ["JavaScript", "TypeScript"],
-      "releases": {
-        "tag-prefix": "browser-"
-      },
-      "userAgents": ["JSClient"],
-      "features": {
-        "allFlags": { "introduced": "0.1" },
-        "appMetadata": { "introduced": "0.1" },
-        "bigSegments": { "introduced": "0.1" },
-        "bootstrapping": { "introduced": "0.1" },
-        "contexts": { "introduced": "0.1" },
-        "experimentation": { "introduced": "0.1" },
-        "flagChanges": { "introduced": "0.1" },
-        "hooks": { "introduced": "0.1" },
-        "inlineContextCustomEvents": { "introduced": "0.1" },
-        "perContextSummaryEvents": { "introduced": "0.1" },
-        "pluginSupport": { "introduced": "0.1" },
-        "privateAttrs": { "introduced": "0.1" },
-        "relayProxyProxy": { "introduced": "0.1" },
-        "secureMode": { "introduced": "0.1" },
-        "track": { "introduced": "0.1" },
-        "variationDetail": { "introduced": "0.1" }
-      }
-    },
     "fastly": {
       "name": "Fastly Edge SDK",
       "type": "edge",