feat(crypto): decrypt secret objects

[MFori]

Add support for isSecret objects and arrays in input schema and the new form of encrypted value:

ENCRYPTED_JSON_VALUE:{FIELD_SCHEMA_HASH}:{ENCRYPTED_PASSWORD}:{ENCRYPTED_VALUE}

More context here apify/apify-shared-js#515

[Copilot]

Pull Request Overview

Adds backward-compatible decryption of both legacy encrypted strings and new JSON‐based encrypted values (including objects and arrays).

• Extends regex and decryption logic to inspect a prefix and decode JSON when needed
• Introduces separate ENCRYPTED_STRING_VALUE_PREFIX and ENCRYPTED_JSON_VALUE_PREFIX constants
• Updates tests to cover legacy string, JSON string, object, and array decryption

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
tests/unit/actor/test_actor_key_value_store.py	Tests expanded for legacy string and JSON (string, object, array) decryption
src/apify/_crypto.py	decrypt_input_secrets now distinguishes prefixes and does json.loads for JSON
src/apify/_consts.py	New constants for string vs JSON prefixes and updated regex to capture both formats

Comments suppressed due to low confidence (1)

tests/unit/actor/test_actor_key_value_store.py:87

• The helper function json_dumps is not defined in this scope. Use json.dumps(secret_string) instead to serialize the value.

    encrypted_string = public_encrypt(json_dumps(secret_string), public_key=PUBLIC_KEY)

[vdusek]

LGTM