[xy] Fix dbt block delete request with nginx. (mage-ai#5332)

# Description
<!-- Please include a summary of the change and which issue is fixed.
Please also include relevant motivation and context.
List any dependencies that are required for this change.
-->
Fix dbt block delete request with nginx. When dbt block with the nested
path and run Mage in nginx, the block can't be deleted because nginx
automatically decode the URL. This PR fixes this issue.

# How Has This Been Tested?
<!-- Please describe the tests that you ran to verify your changes.
Provide instructions so we can reproduce.
-->

- [x] Tested locally


# Checklist
- [x] The PR is tagged with proper labels (bug, enhancement, feature,
documentation)
- [x] I have performed a self-review of my own code
- [ ] I have added unit tests that prove my fix is effective or that my
feature works
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation

cc:
<!-- Optionally mention someone to let them know about this pull request
-->

mage_ai/server/server.py

@@ -346,6 +346,10 @@ def make_app(
         # Download resource
         (r'/api/downloads/(?P<token>[\w/%.-]+)', ApiResourceDownloadHandler),
         (r'/api/(?P<resource>file_contents)/(?P<pk>.+)', ApiResourceDetailHandler),
+        (
+            r'/api/(?P<resource>pipelines)/(?P<pk>[\w\-\%2f\.]+)'
+            r'/(?P<child>blocks)/(?P<child_pk>.+)',
+            ApiChildDetailHandler),
         (
             r'/api/(?P<resource>\w+)/(?P<pk>[\w\-\%2f\.]+)'
             r'/(?P<child>\w+)/(?P<child_pk>[\w\-\%2f\.]+)',