implement collation trim block without collate builder call.

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala

@@ -2557,6 +2557,13 @@ class AstBuilder extends DataTypeAstBuilder
   }
 
   override def visitCollateClause(ctx: CollateClauseContext): String = withOrigin(ctx) {
+    val collationName = ctx.collationName.getText
+    if (!SQLConf.get.trimCollationEnabled &&
+      (collationName.toUpperCase().contains("TRIM") ||
+        collationName.toUpperCase().contains("LTRIM") ||
+        collationName.toUpperCase().contains("RTRIM"))) {
+      throw QueryCompilationErrors.trimCollationNotEnabledError()
+    }
     ctx.identifier.getText
   }
 

sql/core/src/test/scala/org/apache/spark/sql/errors/QueryCompilationErrorsSuite.scala

@@ -869,6 +869,20 @@ class QueryCompilationErrorsSuite
   }
 
   test("SPARK-49666: the trim collation feature is off without collate builder call") {
+    withSQLConf(SQLConf.TRIM_COLLATION_ENABLED.key -> "false") {
+      Seq(
+        "CREATE TABLE t(col STRING COLLATE EN_TRIM_CI) USING parquet",
+        "CREATE TABLE t(col STRING COLLATE UTF8_LCASE_TRIM) USING parquet",
+        "SELECT 'aaa' COLLATE UNICODE_LTRIM_CI",
+      ).foreach { sqlText =>
+        checkError(
+          exception = intercept[AnalysisException](sql(sqlText)),
+          condition = "UNSUPPORTED_FEATURE.TRIM_COLLATION")
+      }
+    }
+  }
+
+  test("SPARK-49666: the trim collation feature is off with collate builder call") {
     withSQLConf(SQLConf.TRIM_COLLATION_ENABLED.key -> "false") {
       Seq(
         "SELECT collate('aaa', 'UNICODE_TRIM')",