repl: add support for multiline history

[puskin94]

Previously, when navigating the history in the Node.js REPL, multiline commands were displayed line by line, making it difficult to review and edit complete blocks of input.

This PR improves the REPL history behavior by treating multiline commands as a single entry. Now, when scrolling through history, entire blocks of multiline input are displayed together, improving usability and consistency.

Key changes:

• Adjusted history handling to store and retrieve multiline commands as single entries.
• Updated navigation logic to properly display multiline inputs.
• Improved editing experience, allowing users to modify multiline history entries in place.

Impact:

This change significantly enhances the REPL experience for users who frequently enter complex or multiline expressions, making command recall and editing more intuitive.

Testing:

• Manually tested with various multiline inputs, both on unix and windows systems
• Verified history navigation behaves as expected with both single-line and multiline commands.

Demos

Before:

After:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.22%. Comparing base (27f98c3) to head (8b261ae).
Report is 33 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #57400      +/-   ##
==========================================
+ Coverage   90.20%   90.22%   +0.01%     
==========================================
  Files         630      629       -1     
  Lines      185307   185145     -162     
  Branches    36269    36237      -32     
==========================================
- Hits       167162   167044     -118     
+ Misses      11084    11053      -31     
+ Partials     7061     7048      -13     

Files with missing lines	Coverage Δ
lib/internal/readline/interface.js	96.95% <100.00%> (+<0.01%)	⬆️
lib/internal/repl/history.js	86.26% <100.00%> (ø)
lib/repl.js	94.95% <100.00%> (+0.04%)	⬆️

... and 56 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.