Update for-in loop to work with eslint:recommended (#99721)

The code in the automatic template will fail this eslint rule: https://eslint.org/docs/rules/no-prototype-builtins. This is just plain annoying.

This change will make the snippet generated code not fail the linter. It will also avoid the subtle bugs that the eslint rule was made to avoid in the first place.

extensions/typescript-basics/snippets/typescript.code-snippets

@@ -151,7 +151,7 @@
 		"prefix": "forin",
 		"body": [
 			"for (const ${1:key} in ${2:object}) {",
-			"\tif (${2:object}.hasOwnProperty(${1:key})) {",
+			"\tif (Object.prototype.hasOwnProperty.call(${2:object}, ${1:key})) {",
 			"\t\tconst ${3:element} = ${2:object}[${1:key}];",
 			"\t\t$0",
 			"\t}",