fix: hide editor cursor during command-line mode

[nikhiltelkar2005-glitch]

Description

Resolves #2436.

Currently, when a user enters command-line mode (:), search mode (/), or reverse search mode (?), the cursor remains visibly blinking in the active editor. Because Vim is terminal-based, the cursor is supposed to jump to the bottom status line and disappear from the main editor entirely to prevent confusion.

Since the VS Code extension API does not natively support completely hiding the cursor (TextEditorCursorStyle.Hidden does not exist), this PR approximates the native Vim behavior by mapping these modes to BlockOutline.

This effectively turns the cursor into a static, hollow box that represents a defocused/inactive state, which eliminates the distracting blinking cursor while typing in the status bar command-line.

Changes Made

• src/mode/mode.ts: Introduced a new VSCodeVimCursorType.Hidden cursor type enum and mapped it to use vscode.TextEditorCursorStyle.BlockOutline.
• src/mode/modeHandler.ts: Updated getCursorType() so that SearchInProgressMode and CommandlineInProgress now return the new Hidden cursor type instead of UnderlineThin.
• test/index.ts: Updated the glob import and usage to conform to glob v10's Promise API to fix local test runner build errors.

Testing

• Verified that compiling via yarn build-dev succeeds.
• Verified that local tests run cleanly.
• Manually tested entering :, /, and ? modes to ensure the active cursor stops blinking and transforms into the BlockOutline style until the mode is exited.