Fix formatter spacing for JSON path operators (->, ->>)

[Sea-n]

Summary

• Treat -> and ->> as SQL operators in the lexer.
• Prevent formatter from inserting spaces around JSON path operators.
• Add formatter test for JSON path access.

For example: SELECT details->'$."first_name"' FROM users;

Expected:

SELECT
    details->'$."first_name"'
FROM
    users;

Actual:

SELECT
    details - > '$."first_name"'
FROM
    users;

Caused SQL syntax error.

Tests

./vendor/bin/phpunit passed

I didn’t run ./vendor/bin/phpcbf as suggested in CONTRIBUTING.md because it currently changes about 60 files and produces roughly 150 lines of diff. If you’re okay with it, I’d love to handle that in a separate PR.

References

• MySQL Manual: JSON Functions

[Sea-n]

CC @MauricioFauth and @williamdes,
if you have a chance to review, I'd really appreciate it. Thanks!