MDEV-32619 Fix setting SRID with ST_*FromWKB()

[MoonE]

• The Jira issue number for this PR is: MDEV-32619

Description

When using ST_GeomFromWKB(g, srid) where g is already a mysql geometry the srid argument was disregarded.

Release Notes

TODO: What should the release notes say about this change?
Include any changed system variables, status variables or behaviour. Optionally list any https://mariadb.com/kb/ pages that need changing.

How can this PR be tested?

Test added to file gis.test

Basing the PR against the correct MariaDB version

• This is a new feature and the PR is based against the latest MariaDB development branch.
• This is a bug fix and the PR is based against the earliest maintained branch in which the bug can be reproduced.

PR quality check

• I checked the CODING_STANDARDS.md file and my PR conforms to this where appropriate.
• For any trivial modifications to the PR, I am ok with the reviewer making the changes themselves.

[LinuxJedi]

Looks good to me. I would need to get someone who knows GIS better than me to review it too.

Please note that it won't land in 10.4, there is only one release left of that version which is reserved for critical / security fixes only. This will need to target 10.5 before it is merged. We should be able to do this our end though if this makes things easier for you.

[CLAassistant]

All committers have signed the CLA.