Fix userName must be case insentive

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

pkg/coredata/membership_profile_filter.go

@@ -153,8 +153,8 @@ AND (
 )
 AND (
 	CASE
-		WHEN @filter_user_name::text IS NOT NULL THEN
-			p.user_name = @filter_user_name::text
+		WHEN @filter_user_name::citext IS NOT NULL THEN
+			p.user_name = @filter_user_name::citext
 		ELSE TRUE
 	END
 )

pkg/coredata/migrations/20260309T120000Z.sql

@@ -0,0 +1,2 @@
+ALTER TABLE iam_membership_profiles
+ALTER COLUMN user_name TYPE CITEXT;