🐛 Bug Report: Improve Message on Execution Tab

### 👟 Reproduction steps

The message on the execution tab of a Function shows below -


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The message isn't 100% accurate though, it should instead be -
1. Deployment Exists - `You have no execution logs. Execute the Function to see see it here.`
2. Deployment Doesn't Exist - `Function has no deployment. Create, activate & execute a deployment to see the logs here.`

Also, the `Execute` button shows when there's no deployment & clicking it returns a response from backend - `Deployment not found. Create a deployment before trying to execute a function` which is fine but this can also be improved with a pre-check of deployment existence.

### 👍 Expected behavior

Better message should be shown.

### 👎 Actual Behavior

Message isn't 100% accurate.

### 🎲 Appwrite version

Appwrite Cloud

### 💻 Operating system

Linux

### 🧱 Your Environment

_No response_

### 👀 Have you spent some time to check if this issue has been raised before?

- [X] I checked and didn't find similar issue

### 🏢 Have you read the Code of Conduct?

- [X] I have read the [Code of Conduct](https://github.com/appwrite/.github/blob/main/CODE_OF_CONDUCT.md)