FINERACT-2350: Fix DockerHub tags, use 'latest' for develop and version tags for release

[Akshat-Soni02]

…eases

Description

This PR updates the DockerHub publishing workflow (publish-dockerhub.yml) to improve tag naming:

• For builds from the develop branch → publish image with the latest tag.
• For builds from release tags (1.*) → publish image with the version number only.
• Removes publishing of commit hashes and the develop tag.

This change makes the "Recent tags" dropdown on DockerHub more understandable for end users.

Checklist

Please make sure these boxes are checked before submitting your pull request - thanks!

• [x] Write the commit message as per https://github.com/apache/fineract/#pull-requests
• [x] Acknowledge that we will not review PRs that are not passing the build ("green") - it is your responsibility to get a proposed PR to pass the build, not primarily the project's maintainers.
• [ ] Create/update unit or integration tests for verifying the changes made. (Not applicable — workflow change only)
• [x] Follow coding conventions at https://cwiki.apache.org/confluence/display/FINERACT/Coding+Conventions.
• [ ] Add required Swagger annotation and update API documentation at fineract-provider/src/main/resources/static/legacy-docs/apiLive.htm with details of any API changes. (Not applicable — no API change)
• [x] Submission is not a "code dump".

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