fix: spark may not show exceptions or show backtrace as json

[kenjis]

Description

Fix a bug that spark may not show exceptions in production mode, or show backtrace as json.

How to Reproduce

(1) Setup MySQL and use the default Config (no .env). That is database is an empty string and in production mode.

Before:

$ php spark db:table

CodeIgniter v4.4.1 Command Line Tool - Server Time: 2023-09-25 02:24:59 UTC+00:00

After:

$ php spark db:table

CodeIgniter v4.4.1 Command Line Tool - Server Time: 2023-09-25 02:23:08 UTC+00:00

[mysqli_sql_exception]

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1

at SYSTEMPATH/Database/MySQLi/Connection.php:306

(2) Change to development mode.

Before:

$ php spark db:table

CodeIgniter v4.4.1 Command Line Tool - Server Time: 2023-09-25 01:52:27 UTC+00:00

{
    "title": "mysqli_sql_exception",
    "type": "mysqli_sql_exception",
    "code": 500,
    "message": "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1",
    "file": "/Users/kenji/work/codeigniter/official/CodeIgniter4/system/Database/MySQLi/Connection.php",
    "line": 306,
    "trace": [
        {
...

After:

$ php spark db:table

CodeIgniter v4.4.1 Command Line Tool - Server Time: 2023-09-25 02:36:43 UTC+00:00


[mysqli_sql_exception]

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1

at SYSTEMPATH/Database/MySQLi/Connection.php:306

Backtrace:
  1    SYSTEMPATH/Database/MySQLi/Connection.php:306
       mysqli()->query('SHOW TABLES FROM ', 0)
...

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[kenjis]

Added the docs.

[github-actions]

👋 Hi, @kenjis!

We detected conflicts in your PR against the base branch 🙊
You may want to sync 🔄 your branch with upstream!

Ref: Syncing Your Branch

[kenjis]

Rebased to resolve a conflict.