feat(php): 添加对 throw 语句的支持并改进 switch case 验证

- 在 AstNodeType 中添加 isThrowExpr 方法用于检测 throw 表达式
- 修改 CompilerBase 中的 switch case 验证逻辑，支持以 throw 结尾的 case
- 更新 parseThrow 方法以正确处理不同类型的异常对象
- 将最低 PHP 版本兼容性要求从 8.0 更新到 8.4

bin/gen_stub.php

@@ -4252,7 +4252,7 @@ class FileInfo {
     public bool $generateClassEntries = true;
     private bool $isUndocumentable = false;
     private bool $legacyArginfoGeneration = false;
-    private ?int $minimumPhpVersionIdCompatibility = PHP_80_VERSION_ID;
+    private ?int $minimumPhpVersionIdCompatibility = PHP_84_VERSION_ID;
 
     /** @param array<int, DocCommentTag> $fileTags */
     public function __construct(array $fileTags) {

src/Php/AstNodeType.php

@@ -122,6 +122,14 @@ trait AstNodeType
         return $expr instanceof Node\Stmt\Break_;
     }
 
+    protected function isThrowExpr(NodeAbstract $expr): bool
+    {
+        if ($expr instanceof Node\Stmt\Expression) {
+            $expr = $expr->expr;
+        }
+        return $expr instanceof Expr\Throw_;
+    }
+
     protected function isExitExpr(NodeAbstract $expr): bool
     {
         if ($expr instanceof Node\Stmt\Expression) {

src/Php/CompilerBase.php

@@ -3351,8 +3351,12 @@ class CompilerBase extends \PhpAot\Core\Translator
                 $stmts = $stmts[0]->stmts;
             }
             $lastExpr = end($stmts);
-            if (!$this->isReturnExpr($lastExpr) and !$this->isExitExpr($lastExpr) and !$this->isBreakExpr($lastExpr)) {
-                $this->fatalError($case, 'switch case must end with return or break or exit, ' . $lastExpr->getType() . ' given');
+            if (!$this->isReturnExpr($lastExpr)
+                and !$this->isExitExpr($lastExpr)
+                and !$this->isBreakExpr($lastExpr)
+                and !$this->isThrowExpr($lastExpr)
+            ) {
+                $this->fatalError($case, 'switch case must end with return/break/exit/throw, ' . $lastExpr->getType() . ' given');
             }
 
             if ($condList) {
@@ -3959,10 +3963,11 @@ class CompilerBase extends \PhpAot\Core\Translator
     protected function parseThrow(mixed $expr): string
     {
         if (!$this->isVarExpr($expr->expr) and $expr->expr->getType() != self::EXPR_NEW) {
-            $this->fatalError($expr, 'The throw statement only accepts a object variable');
+            $ex = $this->convertToObject($expr->expr);
+        } else {
+            $ex = $this->parseIdentifier($expr->expr);
         }
-
-        return 'php::throwException(' . $this->parseIdentifier($expr->expr) . ')';
+        return 'php::throwException(' . $ex . ')';
     }
 
     protected function parseTryCatch(mixed $v): string