[BD-13] Deprecate ModuleSystem.render_template (fixed) (#29354)

* refactor: deprecates ModuleSystem.render_template

in favor of the added MakoSystem render_template method.

Related changes:
* Adds the MakoService to the StudioEditModuleRuntime,
  PreviewModuleSystem, LmsModuleSystem, and XBlockRuntime
* MakoService constructor takes a `namespace_prefix` string, so that the
  CMS PreviewModuleSystem can render to LMS templates, without needing
  the special render_from_lms helper method.
* ModuleSystem.render_template becomes a read-only property, so the
  constructor calls and test module systems are updated accordingly.
* Adds tests for the MakoService and module system shims.

(cherry picked from commit 457f959356)

* refactor: use MakoService.render_template to remove deprecation warnings

from block code.

(cherry picked from commit 8d62d337f5)

* refactor: use MakoService.render_template to remove deprecation warnings

from test code.

(cherry picked from commit 26b43465a4)

* test: Adds a test to verify the bug introduced by the previous changes

The AuthoringMixin is automatically added to all XBlocks (see
settings.XBLOCK_MIXINS), and AuthoringMixin.visibility_view expects the
"mako" service.

This test verifies the bug by testing the PureXBlock, which does not
require the "mako" service, and so fails when the visibility_view is
rendered.

* fix: AuthoringMixin needs mako service

which fixes the visibility_view for XBlocks which don't explicitly
require the mako service.

Also removes the unneeded class property _services_requested from
AuthoringMixin and StudioEditableBlock. This property is better provided
by the XBlockMixin class.

common/test/templates/edxmako.html

@@ -0,0 +1 @@
+<%page expression_filter="h"/><div id="${element_id}" ns="main">Testing the MakoService</div>