Flip default to use conpty based on build number

We can revert this before stable if there are bit issues, but the fact that
#57803 goes away is pretty big.

src/vs/workbench/parts/terminal/electron-browser/terminal.contribution.ts

@@ -398,7 +398,7 @@ configurationRegistry.registerConfiguration({
 			default: 'inherited'
 		},
 		'terminal.integrated.experimentalUseConpty': {
-			description: nls.localize('terminal.integrated.experimentalUseConpty', "Whether to enable conpty on Windows 10 (needs >= 17692). Winpty will be used if this is false."),
+			description: nls.localize('terminal.integrated.experimentalUseConpty', "Whether to use ConPTY for Windows terminal process communication (requires Windows 10 build number 17692+). The default is to enable this on Windows 10 build number 17692+. Winpty will be used if this is false."),
 			type: 'boolean',
 			default: false
 		}