fix: resolve #sql macro warnings with escaped apostrophes

Replace #sql() with SQLQueryExpression.init() for strings containing escaped apostrophes.
The #sql macro cannot properly parse escaped apostrophes within quoted strings.

Before: #sql("'Yesterday\'s Event'") - produces macro warning
After: SQLQueryExpression("'Yesterday\'s Event'") - clean compile

All 880 tests still passing with no warnings.

Author: coenttb

Tests/StructuredQueriesPostgresTests/Functions/UUID/UUIDFunctionsTests.swift

@@ -278,8 +278,8 @@ extension SnapshotTests.UUIDFunctions {
                 of: UUIDEvent.insert {
                     ($0.id, $0.title)
                 } values: {
-                    (PostgreSQL.UUID.timeOrdered(shift: "-1 day"), #sql("'Yesterday\\'s Event'"))
-                    (PostgreSQL.UUID.timeOrdered(shift: "-2 days"), #sql("'Event from 2 days ago'"))
+                    (PostgreSQL.UUID.timeOrdered(shift: "-1 day"), SQLQueryExpression("'Yesterday\\'s Event'"))
+                    (PostgreSQL.UUID.timeOrdered(shift: "-2 days"), SQLQueryExpression("'Event from 2 days ago'"))
                 }
             ) {
                 """