Move class-string verbosity logic to VerbosityLevel::getRecommendedLevelByType

Instead of modifying ConstantStringType::describe() at typeOnly level,
use VerbosityLevel to bump to value level when the accepting type contains
class-string types. The class-string<ClassName> description is now shown
at value verbosity level instead of typeOnly.

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

Author: phpstan-bot

src/Type/Constant/ConstantStringType.php

@@ -113,16 +113,18 @@ public function getObjectTypeOrClassStringObjectType(): Type
 	public function describe(VerbosityLevel $level): string
 	{
 		return $level->handle(
-			fn (): string => $this->isClassString ? 'class-string<' . $this->value . '>' : 'string',
+			static fn (): string => 'string',
 			function (): string {
+				if ($this->isClassString) {
+					return 'class-string<' . $this->value . '>';
+				}
+
 				$value = $this->value;
 
-				if (!$this->isClassString) {
-					try {
-						$value = Strings::truncate($value, self::DESCRIBE_LIMIT);
-					} catch (RegexpException) {
-						$value = substr($value, 0, self::DESCRIBE_LIMIT) . "\u{2026}";
-					}
+				try {
+					$value = Strings::truncate($value, self::DESCRIBE_LIMIT);
+				} catch (RegexpException) {
+					$value = substr($value, 0, self::DESCRIBE_LIMIT) . "\u{2026}";
 				}
 
 				return self::export($value);

src/Type/VerbosityLevel.php

@@ -174,6 +174,10 @@ public static function getRecommendedLevelByType(Type $acceptingType, ?Type $acc
 				$moreVerbose = true;
 				return $type;
 			}
+			if ($type->isClassString()->yes()) {
+				$moreVerbose = true;
+				return $type;
+			}
 			return $traverse($type);
 		};