chore: Updating the description for run behaviour options of a JS object function (#41053)

## Description

Updating the description for run behaviour options of a JS object
function

Fixes [#41047](https://github.com/appsmithorg/appsmith/issues/41047)

## Automation

/ok-to-test tags="@tag.JS"

### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results  -->
> [!TIP]
> 🟢 🟢 🟢 All cypress tests have passed! 🎉 🎉 🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/15904358858>
> Commit: 643f72c44ba967a46e6d3d65c0e992816797c62d
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=15904358858&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.JS`
> Spec:
> <hr>Thu, 26 Jun 2025 15:09:38 UTC
<!-- end of auto-generated comment: Cypress test results  -->


## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [ ] No


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* Updated run behavior options for JS functions with clearer, more
specific descriptions on how and when they execute.

* **Style**
* Improved clarity of descriptions for JS function run behaviors to
enhance user understanding.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

app/client/src/constants/AppsmithActionConstants/formConfig/PluginSettings.ts

@@ -24,7 +24,26 @@ export const RUN_BEHAVIOR_VALUES = [
 ];
 
 export const JS_OBJECT_RUN_BEHAVIOR_VALUES = [
-  ...RUN_BEHAVIOR_VALUES,
+  {
+    label: "Automatic",
+    subText:
+      "JS function runs on page load or when a variable it depends on changes",
+    value: ActionRunBehaviour.AUTOMATIC,
+    children: "Automatic",
+  },
+  {
+    label: "On page load",
+    subText: "JS function runs when the page loads or when manually triggered",
+    value: ActionRunBehaviour.ON_PAGE_LOAD,
+    children: "On page load",
+  },
+  {
+    label: "Manual",
+    subText:
+      "JS function only runs when called in an event or JS with functionName()",
+    value: ActionRunBehaviour.MANUAL,
+    children: "Manual",
+  },
   {
     label: "On page unload",
     subText: "Query runs when the page unloads or when manually triggered",