fix: resolve bit test AST mismatches by preserving pg_catalog prefixes and removing unnecessary TypeCast parentheses

- Remove TypeCast from isComplexExpression to prevent unnecessary parentheses around CAST expressions
- Preserve pg_catalog prefixes in TypeCast method for AST fidelity (e.g. pg_catalog.varbit)
- Resolves original-upstream-bit.test.ts AST mismatches (all 105 bit fixtures now pass)
- Progress: 2 of 3 remaining failing tests now fixed

Co-Authored-By: Dan Lynch <[email protected]>

Author: pyramation

packages/deparser/src/deparser.ts

@@ -536,8 +536,7 @@ export class Deparser implements DeparserVisitor {
       node.CaseExpr ||
       node.CoalesceExpr ||
       node.SubLink ||
-      node.A_Expr ||
-      node.TypeCast
+      node.A_Expr
     );
   }
 
@@ -1782,8 +1781,7 @@ export class Deparser implements DeparserVisitor {
       return `${arg}::${cleanTypeName}`;
     }
 
-    const cleanTypeName = typeName.replace('pg_catalog.', '');
-    return `CAST(${arg} AS ${cleanTypeName})`;
+    return `CAST(${arg} AS ${typeName})`;
   }
 
   CollateClause(node: t.CollateClause, context: DeparserContext): string {