Making the whitespaces align vertically with variable font text

[aiday-mar]

No description provided.

[Copilot]

Pull request overview

This PR adjusts editor whitespace rendering so that whitespace markers are rendered via the experimental whitespace overlay even on lines that contain variable-font-affecting decorations, improving alignment with the actual rendered text.

Changes:

• Enable WhitespaceOverlay rendering for lines flagged with lineData.hasVariableFonts (remove the early-return skip).
• Ensure view-line DOM rendering does not render whitespace when experimentalWhitespaceRendering !== 'off', regardless of hasVariableFonts, so the overlay is the single whitespace-rendering mechanism in experimental modes.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/vs/editor/browser/viewParts/whitespace/whitespace.ts	Removes the variable-font short-circuit so the overlay can render whitespace markers on those lines.
src/vs/editor/browser/viewParts/viewLines/viewLine.ts	Simplifies the whitespace rendering decision so experimental modes always delegate whitespace rendering to the overlay.