[SPARK-48081] Fix ClassCastException in NTile.checkInputDataTypes() when argument is non-foldable or of wrong type

### What changes were proposed in this pull request?

While migrating the `NTile` expression's type check failures to the new error class framework, PR #38457 removed a pair of not-unnecessary `return` statements and thus caused certain branches' values to be discarded rather than returned.

As a result, invalid usages like

```
select ntile(99.9) OVER (order by id) from range(10)
```

trigger internal errors like errors like

```
 java.lang.ClassCastException: class org.apache.spark.sql.types.Decimal cannot be cast to class java.lang.Integer (org.apache.spark.sql.types.Decimal is in unnamed module of loader 'app'; java.lang.Integer is in module java.base of loader 'bootstrap')
  at scala.runtime.BoxesRunTime.unboxToInt(BoxesRunTime.java:99)
  at org.apache.spark.sql.catalyst.expressions.NTile.checkInputDataTypes(windowExpressions.scala:877)
```

instead of clear error framework errors like

```
org.apache.spark.sql.catalyst.ExtendedAnalysisException: [DATATYPE_MISMATCH.UNEXPECTED_INPUT_TYPE] Cannot resolve "ntile(99.9)" due to data type mismatch: The first parameter requires the "INT" type, however "99.9" has the type "DECIMAL(3,1)". SQLSTATE: 42K09; line 1 pos 7;
'Project [unresolvedalias(ntile(99.9) windowspecdefinition(id#0L ASC NULLS FIRST, specifiedwindowframe(RowFrame, unboundedpreceding$(), currentrow$())))]
+- Range (0, 10, step=1, splits=None)

  at org.apache.spark.sql.catalyst.analysis.package$AnalysisErrorAt.dataTypeMismatch(package.scala:73)
  at org.apache.spark.sql.catalyst.analysis.CheckAnalysis.$anonfun$checkAnalysis0$7(CheckAnalysis.scala:315)
```

### Why are the changes needed?

Improve error messages.

### Does this PR introduce _any_ user-facing change?

Yes, it improves an error message.

### How was this patch tested?

Added a new test case to AnalysisErrorSuite.

### Was this patch authored or co-authored using generative AI tooling?

No.

Closes #46333 from JoshRosen/SPARK-48081.

Authored-by: Josh Rosen <joshrosen@databricks.com>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>
(cherry picked from commit b99a64b)
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>

Author: JoshRosen

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/windowExpressions.scala

@@ -848,7 +848,7 @@ case class NTile(buckets: Expression) extends RowNumberLike with SizeBasedWindow
   // for each partition.
   override def checkInputDataTypes(): TypeCheckResult = {
     if (!buckets.foldable) {
-      DataTypeMismatch(
+      return DataTypeMismatch(
         errorSubClass = "NON_FOLDABLE_INPUT",
         messageParameters = Map(
           "inputName" -> "buckets",
@@ -859,7 +859,7 @@ case class NTile(buckets: Expression) extends RowNumberLike with SizeBasedWindow
     }
 
     if (buckets.dataType != IntegerType) {
-      DataTypeMismatch(
+      return DataTypeMismatch(
         errorSubClass = "UNEXPECTED_INPUT_TYPE",
         messageParameters = Map(
           "paramIndex" -> "1",

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/analysis/AnalysisErrorSuite.scala

@@ -316,6 +316,40 @@ class AnalysisErrorSuite extends AnalysisTest {
     listRelation.select(Explode($"list").as("a"), Explode($"list").as("b")),
     "only one generator" :: "explode" :: Nil)
 
+  errorClassTest(
+    "the buckets of ntile window function is not foldable",
+    testRelation2.select(
+      WindowExpression(
+        NTile(Literal(99.9f)),
+        WindowSpecDefinition(
+          UnresolvedAttribute("a") :: Nil,
+          SortOrder(UnresolvedAttribute("b"), Ascending) :: Nil,
+          UnspecifiedFrame)).as("window")),
+    errorClass = "DATATYPE_MISMATCH.UNEXPECTED_INPUT_TYPE",
+    messageParameters = Map(
+      "sqlExpr" -> "\"ntile(99.9)\"",
+      "paramIndex" -> "first",
+      "inputSql" -> "\"99.9\"",
+      "inputType" -> "\"FLOAT\"",
+      "requiredType" -> "\"INT\""))
+
+
+  errorClassTest(
+    "the buckets of ntile window function is not int literal",
+    testRelation2.select(
+      WindowExpression(
+        NTile(AttributeReference("b", IntegerType)()),
+        WindowSpecDefinition(
+          UnresolvedAttribute("a") :: Nil,
+          SortOrder(UnresolvedAttribute("b"), Ascending) :: Nil,
+          UnspecifiedFrame)).as("window")),
+    errorClass = "DATATYPE_MISMATCH.NON_FOLDABLE_INPUT",
+    messageParameters = Map(
+      "sqlExpr" -> "\"ntile(b)\"",
+      "inputName" -> "`buckets`",
+      "inputExpr" -> "\"b\"",
+      "inputType" -> "\"INT\""))
+
   errorClassTest(
     "unresolved attributes",
     testRelation.select($"abcd"),