Remove default max_tokens values from model constructors

Remove hardcoded max_tokens defaults from Claude and Nova model classes
to prevent potential BC breaks when these values might change in future
versions. Users should explicitly specify max_tokens if needed.

Author: OskarStark

src/Bridge/Anthropic/Claude.php

@@ -36,7 +36,7 @@ class Claude extends Model
      */
     public function __construct(
         string $name,
-        array $options = ['max_tokens' => 1000],
+        array $options = [],
     ) {
         $capabilities = [
             Capability::INPUT_MESSAGES,

src/Bridge/Bedrock/Nova/Nova.php

@@ -29,7 +29,7 @@ final class Nova extends Model
      */
     public function __construct(
         string $name,
-        array $options = ['max_tokens' => 1000],
+        array $options = [],
     ) {
         $capabilities = [
             Capability::INPUT_MESSAGES,