fix: escape special regex characters in ObjectIdentifier delimiter

[fangyinc]

Description

Fixed a bug in ObjectIdentifier.of() method where delimiters containing regex special characters (like .) were not handled correctly.

Changes

• Wrapped the delimiter parameter with Pattern.quote() in the split() call
• This ensures special regex characters are treated as literal strings

Issue

When using "." as delimiter, split() would treat it as a regex pattern (matching any character) instead of a literal dot, causing incorrect splitting behavior.

Example

Before: "db.tb".split(".") → []
After: "db.tb".split(Pattern.quote(".")) → ["db", "tb"]

[fangyinc]

Hi @jackye1995 @jackye1995 , please review my codes.