Preserve never-type implicit throw point suppression for dynamically-typed calls

The previous commit's early return when `!isInThrow()` bypassed the
return type check entirely, creating false implicit throw points for
never-returning calls like `trigger_error("hello", E_USER_ERROR)`.

The original Throwable supertype check accidentally suppressed `never`
(bottom type, subtype of everything). Separate the two concerns:
- `never` return type: always suppress (function terminates, not throws)
- Throwable return type: only suppress inside `throw` expressions

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

src/Analyser/ExprHandler/FuncCallHandler.php

@@ -626,12 +626,8 @@ private function getFunctionThrowPoint(
 				|| $requiredParameters > 0
 				|| count($normalizedFuncCall->getArgs()) > 0
 			) {
-				if (!$context->isInThrow()) {
-					return InternalThrowPoint::createImplicit($scope, $normalizedFuncCall);
-				}
-
 				$functionReturnedType = $scope->getType($normalizedFuncCall);
-				if (!(new ObjectType(Throwable::class))->isSuperTypeOf($functionReturnedType)->yes()) {
+				if (!$context->isInThrow() || !(new ObjectType(Throwable::class))->isSuperTypeOf($functionReturnedType)->yes()) {
 					return InternalThrowPoint::createImplicit($scope, $normalizedFuncCall);
 				}
 			}

src/Analyser/ExprHandler/Helper/MethodThrowPointHelper.php

@@ -88,12 +88,8 @@ public function getThrowPoint(
 				return InternalThrowPoint::createExplicit($scope, $throwType, $normalizedMethodCall, true);
 			}
 		} elseif ($this->implicitThrows) {
-			if (!$context->isInThrow()) {
-				return InternalThrowPoint::createImplicit($scope, $normalizedMethodCall);
-			}
-
 			$methodReturnedType = $scope->getType($normalizedMethodCall);
-			if (!(new ObjectType(Throwable::class))->isSuperTypeOf($methodReturnedType)->yes()) {
+			if (!$context->isInThrow() || !(new ObjectType(Throwable::class))->isSuperTypeOf($methodReturnedType)->yes()) {
 				return InternalThrowPoint::createImplicit($scope, $normalizedMethodCall);
 			}
 		}

tests/PHPStan/Rules/Exceptions/data/bug-9826.php

@@ -59,3 +59,12 @@ function returnThrowable(): \Exception
 {
 	return new \Exception();
 }
+
+function triggerErrorNeverReturns(): void
+{
+	try {
+		$a = trigger_error("hello", E_USER_ERROR);
+	} catch (\Exception $e) {
+		// ok - trigger_error returns never (explicit), gets throw point like any never-returning function
+	}
+}