build: prevent $esbuild-watch error (#1711)

Co-authored-by: Eric Wheeler <[email protected]>

.vscode/tasks.json

@@ -41,7 +41,17 @@
 			"type": "npm",
 			"script": "watch:esbuild",
 			"group": "build",
-			"problemMatcher": "$esbuild-watch",
+			"problemMatcher": {
+				"owner": "esbuild",
+				"pattern": {
+					"regexp": "^$"
+				},
+				"background": {
+					"activeOnStart": true,
+					"beginsPattern": "\\[watch\\] build started",
+					"endsPattern": "\\[watch\\] build finished"
+				}
+			},
 			"isBackground": true,
 			"presentation": {
 				"group": "watch",