Finalize the webview context menu api (microsoft#160561)

Fixes microsoft#54285

Author: mjbvz

src/vs/workbench/services/actions/common/menusExtensionPoint.ts

@@ -266,6 +266,11 @@ const apiMenus: IAPIMenu[] = [
 		description: localize('file.newFile', "The 'New File...' quick pick, shown on welcome page and File menu."),
 		supportsSubmenus: false,
 	},
+	{
+		key: 'webview/context',
+		id: MenuId.WebviewContext,
+		description: localize('webview.context', "The webview context menu")
+	},
 	{
 		key: 'file/share',
 		id: MenuId.MenubarShare,
@@ -285,12 +290,6 @@ const apiMenus: IAPIMenu[] = [
 		description: localize('merge.toolbar', "The prominent button in an editor, overlays its content"),
 		proposed: 'contribEditorContentMenu'
 	},
-	{
-		key: 'webview/context',
-		id: MenuId.WebviewContext,
-		description: localize('webview.context', "The webview context menu"),
-		proposed: 'contribWebviewContext'
-	},
 	{
 		key: 'mergeEditor/result/title',
 		id: MenuId.MergeInputResultToolbar,

src/vs/workbench/services/extensions/common/extensionsApiProposals.ts

@@ -19,7 +19,6 @@ export const allApiProposals = Object.freeze({
 	contribViewSize: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.contribViewSize.d.ts',
 	contribViewsRemote: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.contribViewsRemote.d.ts',
 	contribViewsWelcome: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.contribViewsWelcome.d.ts',
-	contribWebviewContext: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.contribWebviewContext.d.ts',
 	customEditorMove: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.customEditorMove.d.ts',
 	diffCommand: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.diffCommand.d.ts',
 	documentFiltersExclusive: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.documentFiltersExclusive.d.ts',