fix: normalize directory paths for session list queries on Windows

[HRronaldo]

Issue for this PR

Closes #16878
Closes #16562

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

On Windows, session visibility breaks due to path representation differences (e.g., B: vs b:, / vs ). When users create sessions from different path formats (terminal, different tools, etc.), the stored directory path may differ from the path used when querying sessions later. This causes old sessions to not appear in the session list.
The fix adds a normalizeDirectory() function that normalizes:

• Backslashes → forward slashes
• Drive letters → uppercase (for case-insensitive comparison on Windows)
  Applied to:
• Session.toRow() — normalizes directory when storing new sessions
• Session.list() — normalizes directory when querying sessions for a project
• Session.listGlobal() — normalizes directory when querying all sessions
  This ensures consistent path comparison for session listing regardless of how the path was originally entered.

How did you verify your code works?

• The fix follows the same pattern already merged in commit da1ee12 (which was applied after v1.2.20)
• The logic is straightforward string normalization with platform-specific handling
• Code follows existing patterns in the codebase

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR