Only link Python and Rich types when building full docs

It looks like mkdocstrings will fail out if it can't download the inv files.
Unless there's a setting where you can tell it "try, but if you can't grab
them just don't try and create links" the approach here seems reasonable and
has the same effect.

https://github.com/Textualize/textual/issues/2629#issuecomment-1566672594
for reference.

mkdocs-common.yml

@@ -67,9 +67,6 @@ plugins:
     default_handler: python
     handlers:
       python:
-        import:
-          - https://docs.python.org/3/objects.inv
-          - https://rich.readthedocs.io/en/stable/objects.inv
         options:
           show_signature_annotations: false
           separate_signature: true

mkdocs-online.yml

@@ -14,3 +14,9 @@ plugins:
       - categories
       - release
       - tags
+  mkdocstrings:
+    handlers:
+      python:
+        import:
+          - https://docs.python.org/3/objects.inv
+          - https://rich.readthedocs.io/en/stable/objects.inv