test(e2e): update Playwright screenshots and add better tests and assertions for area calculations (#6022)

* Add (better) assertions for area calculation fixes.
* Add SVG and measurement side panel area for freehand ROI test.
* Add Playwright viewport screenshot scope migration guide.
* Update cornerstonjs dependencies to 4.22.8. Ensure all versions of @babel/preset-env are 7.29.5.

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Co-authored-by: Ghadeer Albattarni <165973963+GhadeerAlbattarni@users.noreply.github.com>

.scripts/cs3d-set-version.mjs

@@ -110,8 +110,9 @@ for (const pkgPath of pkgPaths) {
   changes += updateDeps(pkg.resolutions, version);
 
   if (changes > 0) {
-    // Preserve original formatting (detect indent)
-    const indent = content.match(/^(\s+)/m)?.[1] || '  ';
+    // Preserve original formatting (detect indent — restrict to spaces/tabs so
+    // we don't accidentally capture a CRLF newline as part of the indent string)
+    const indent = content.match(/^([ \t]+)/m)?.[1] || '  ';
     writeFileSync(pkgPath, JSON.stringify(pkg, null, indent) + '\n');
     const rel = pkgPath.replace(rootDir + '/', '').replace(rootDir + '\\', '');
     console.log(`  Updated ${rel} (${changes} packages)`);