143. fix circle spatial filter radius issue

[gitcontributor]

Description

Please check if the PR fulfills these requirements

• [ x ] The commit message follows our guidelines: https://github.com/geosolutions-it/MapStore2/blob/master/CONTRIBUTING.md
• [ ] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (check one with "x", remove the others)

• [ x ] Bugfix

Issue

What is the current behavior?

143

What is the new behavior?

Now radius of the circle stays always the same on the change of x,y coordinates

Breaking change

Does this PR introduce a breaking change? (check one with "x", remove the other)

• [ ] Yes, and I documented them in migration notes
• [x] No

Other useful information

[gitcontributor]

Fixes issue only related to the circle

[gitcontributor]

Also this PR: https://github.com/geosolutions-it/MapStore2/pull/5402 is related to fix this issue (rectangular spatial filter)