This is an automated cherry-pick of #9467

What problem does this PR solve?

Issue Number: close #9461

Problem Summary:

What is changed and how it works?

Fix two problems:

1. When the default value of TypeBit contains invalid characters (like 0x07 or 0x08), TiFlash fails to parse the schema JSON.
2. The default value of TypeBit is origin_default_bit_value.

ddl: fix TypeBit default value 

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Fix TiFlash fails to parse the table schema when the schema contains a TypeBit column with a default value that represents an invalid character.
修复当表里含 Bit 类型列并且带有表示非法字符的默认值时 TiFlash 无法解析表 schema 的问题。