Fix Python string-form component name references

The rename script only matched ~prefixed names in .sx files.
Python render calls use bare strings like render_to_html("name")
which also need updating: 37 replacements across 8 files.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

shared/sx/pages.py

@@ -545,7 +545,7 @@ async def execute_page_streaming(
     else:
         suspense_content_sx = f'(~shared:pages/suspense :id "stream-content" :fallback {fallback_sx})'
 
-    initial_page_html = await _helpers_render_to_html("app-body",
+    initial_page_html = await _helpers_render_to_html("shared:layout/app-body",
         header_rows=SxExpr(suspense_header_sx),
         content=SxExpr(suspense_content_sx),
     )