[Improve] K8S active-active deployment pattern doc

[kavindasr]

Description

Doc: https://apim.docs.wso2.com/en/latest/install-and-setup/setup/kubernetes-deployment/kubernetes/am-pattern-1-all-in-one-ha/#prerequisites

Issue 1:

Remove additional SQL commands:

CREATE DATABASE apim_db CHARACTER SET latin1;
CREATE DATABASE shared_db CHARACTER SET latin1;

GRANT ALL ON apim_db.* TO 'apimadmin'@'%';

CREATE USER 'sharedadmin'@'%' IDENTIFIED BY 'sharedadmin';
GRANT ALL ON shared_db.* TO 'sharedadmin'@'%';

Change this to:

CREATE DATABASE apim_db CHARACTER SET latin1;
CREATE DATABASE shared_db CHARACTER SET latin1;

Issue 2:

Remove unnecessary informations:

- WSO2 API Manager 4.6.0 provides three Docker images:
- All-in-one - [wso2am](https://hub.docker.com/r/wso2/wso2am)
- Universal Gateway (GW) - [wso2am-universal-gw](https://hub.docker.com/r/wso2/wso2am-universal-gw)

Rewrite like this:

- For this pattern, you must use the All-in-one - [wso2am](https://hub.docker.com/r/wso2/wso2am) image.

Suggested Fix

Include in the description

Version(s)

4.5.0, 4.6.0, master

[wso2-engineering-bot]

@wso2-engineering-bot create a PR for this issue following repo conventions

[wso2-engineering-bot]

✅ Issue fixed successfully!

I've created PRs for all applicable versions where the K8S active-active deployment pattern documentation exists:

Pull Requests Created:

• PR #10543 - Version 4.6.0
• PR #10544 - Version 4.5.0
• PR #10545 - Version 4.4.0
• PR #10546 - Master branch

Changes Applied:

Issue 1 (SQL Commands): ✅ Fixed in all applicable versions

• Removed unnecessary GRANT and CREATE USER statements
• Simplified to only CREATE DATABASE commands

Issue 2 (Docker Image Information): ✅ Fixed where applicable

• Version 4.6.0: Changed from listing three Docker images to clarifying that only All-in-one image is required
• Version 4.5.0: Same as 4.6.0
• Version 4.4.0: Already had correct wording (only SQL fix needed)
• Master: Same as 4.6.0

Note: Versions 4.3.0, 4.2.0, 4.1.0, and 4.0.0 do not contain the am-pattern-1-all-in-one-ha.md file, so no PRs were needed for those versions.

[kavindasr]

@RakhithaRR please review