[BugFix] Fix LIKE escaping mismatch with MySQL in constant folding (backport #74814)

[Joob1n]

Why I'm doing:

StarRocks is compatible with MySQL 8, but WHERE-LIKE with constant items produces different results.

select 'a\\b' like 'a\\\\b';
MySQL: 1
StarRocks: 0

select 'a\\b' like 'a\\b';
MySQL: 0
StarRocks: 1

What I'm doing:

Add the 2nd-layer escape operator when FE handle the WHERE-LIKE with constant items.

What type of PR is this:

• BugFix
• Feature
• Enhancement
• Refactor
• UT
• Doc
• Tool

Does this PR entail a change in behavior?

• Yes, this PR will result in a change in behavior.
• No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

• Interface/UI changes: syntax, type conversion, expression evaluation, display information
• Parameter changes: default values, similar parameters but with different default values
• Policy changes: use new policy to replace old one, functionality automatically enabled
• Feature removed
• Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

• I have added test cases for my bug fix or my new feature
• This pr needs user documentation (for new or modified features or behaviors)
  • I have added documentation for my new feature or new function
  • This pr needs auto generate documentation
• This is a backport pr

Bugfix cherry-pick branch check:

• I have checked the version labels which the pr will be auto-backported to the target branch
  • 4.1
  • 4.0
  • 3.5