fix(web): include PublicationMode/IsMembersOnly in showcase SQL to fix /showcase 500

Dapper.AOT generated a 19-parameter ctor for ShowcaseSessionRow based on the
SELECT list in GetShowcaseSessionsAsync / GetShowcaseSessionAsync. After
adding PublicationMode and IsMembersOnly to ShowcaseSessionDto in v3.7.0 the
record itself was extended, but the SELECT still returned 19 columns, so the
materializer threw "A parameterless default constructor or one matching
signature (...) is required" and every request to /showcase returned 500.

Add s.publication_mode and (s.publication_mode = 'ClubOnly') to both SELECT
lists and propagate them through the ShowcaseSessionDto construction. The
field list now matches the generated constructor exactly.

Version bump 3.7.0 -> 3.7.1 (patch).

.gitea/workflows/deploy.yml

@@ -6,7 +6,7 @@ on:
       - main 
 
 env:
-  VERSION: 3.7.0
+  VERSION: 3.7.1
 
 jobs:
   # ЧАСТЬ 1: Собираем образы и кладем в Gitea (чтобы делиться с ребятами)