refactor(server): decrypt license with provided aes key (#12570)

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **New Features**
  - Added support for a new AES key for license management, improving license encryption and decryption processes.

- **Bug Fixes**
  - Improved error messages and handling when activating expired or invalid licenses.

- **Refactor**
  - Updated license decryption logic to use a fixed AES key instead of deriving one from the workspace ID.
  - Added validation for environment variable values to prevent invalid configurations.

- **Tests**
  - Enhanced license-related tests to cover new key usage and updated error messages.
  - Updated environment variable validation tests with clearer error messages.

- **Chores**
  - Updated environment variable handling for improved consistency.
  - Set production environment variable explicitly in build configuration.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/backend/native/index.d.ts

@@ -4,6 +4,8 @@ export declare class Tokenizer {
   count(content: string, allowedSpecial?: Array<string> | undefined | null): number
 }
 
+export const AFFINE_PRO_LICENSE_AES_KEY: string | undefined | null
+
 export const AFFINE_PRO_PUBLIC_KEY: string | undefined | null
 
 export declare function fromModelName(modelName: string): Tokenizer | null

packages/backend/native/src/lib.rs

@@ -54,4 +54,8 @@ pub fn merge_updates_in_apply_way(updates: Vec<Buffer>) -> Result<Buffer> {
 }
 
 #[napi]
-pub const AFFINE_PRO_PUBLIC_KEY: Option<&'static str> = std::option_env!("AFFINE_PRO_PUBLIC_KEY",);
+pub const AFFINE_PRO_PUBLIC_KEY: Option<&'static str> = std::option_env!("AFFINE_PRO_PUBLIC_KEY");
+
+#[napi]
+pub const AFFINE_PRO_LICENSE_AES_KEY: Option<&'static str> =
+  std::option_env!("AFFINE_PRO_LICENSE_AES_KEY");